This will vary because unlike other stat sites we include 100% of a brackets champions played and never include champions that don't belong in the bracket.
Emerald+ Champions Analysed: 39,973,525
We include 100% of the champions played of every selected tier bracket in our analysis, we never include champions from outside the tier quoted tier.
Jayce Counters
Jayce top vs middle Counters
Jayce top on Patch 14.1 is the strongest counter to middle champions of Vayne, Karthus & Caitlyn. While Jayce top is countered most by middle champions of Xin Zhao, Quinn & Singed. Below is a detailed breakdown of Jayce top counters against middle champions with a minimum of 100 games.
Xin Zhao
the Seneschal of Demacia
Jayce wins against Xin Zhao 40.91% of the time which is 5.06% lower against Xin Zhao than the average opponent.
After normalising both champions win rates Jayce wins against Xin Zhao 4.77% less often than would be expected.
The average opponent winrate against Xin Zhaois 45.97%.
Quinn
Demacia's Wings
Jayce wins against Quinn 41.15% of the time which is 3.42% lower against Quinn than the average opponent.
After normalising both champions win rates Jayce wins against Quinn 3.14% less often than would be expected.
The average opponent winrate against Quinnis 44.57%.
Singed
the Mad Chemist
Jayce wins against Singed 41.54% of the time which is 3.19% lower against Singed than the average opponent.
After normalising both champions win rates Jayce wins against Singed 2.91% less often than would be expected.
The average opponent winrate against Singedis 44.73%.
Twitch
the Plague Rat
Jayce wins against Twitch 42.20% of the time which is 5.29% lower against Twitch than the average opponent.
After normalising both champions win rates Jayce wins against Twitch 5.00% less often than would be expected.
The average opponent winrate against Twitchis 47.49%.
Mordekaiser
the Iron Revenant
Jayce wins against Mordekaiser 42.47% of the time which is 3.36% lower against Mordekaiser than the average opponent.
After normalising both champions win rates Jayce wins against Mordekaiser 3.07% less often than would be expected.
The average opponent winrate against Mordekaiseris 45.83%.
Zac
the Secret Weapon
Jayce wins against Zac 42.64% of the time which is 1.45% lower against Zac than the average opponent.
After normalising both champions win rates Jayce wins against Zac 1.17% less often than would be expected.
The average opponent winrate against Zacis 44.09%.
Gragas
the Rabble Rouser
Jayce wins against Gragas 42.86% of the time which is 4.59% lower against Gragas than the average opponent.
After normalising both champions win rates Jayce wins against Gragas 4.30% less often than would be expected.
The average opponent winrate against Gragasis 47.45%.
Kennen
the Heart of the Tempest
Jayce wins against Kennen 43.11% of the time which is 3.09% lower against Kennen than the average opponent.
After normalising both champions win rates Jayce wins against Kennen 2.80% less often than would be expected.
The average opponent winrate against Kennenis 46.20%.
Riven
the Exile
Jayce wins against Riven 43.37% of the time which is 2.44% lower against Riven than the average opponent.
After normalising both champions win rates Jayce wins against Riven 2.15% less often than would be expected.
The average opponent winrate against Rivenis 45.81%.
Kayle
the Righteous
Jayce wins against Kayle 43.55% of the time which is 1.97% lower against Kayle than the average opponent.
After normalising both champions win rates Jayce wins against Kayle 1.68% less often than would be expected.
The average opponent winrate against Kayleis 45.52%.
Zilean
the Chronokeeper
Jayce wins against Zilean 43.67% of the time which is 2.00% lower against Zilean than the average opponent.
After normalising both champions win rates Jayce wins against Zilean 1.71% less often than would be expected.
The average opponent winrate against Zileanis 45.67%.
Naafiri
the Hound of a Hundred Bites
Jayce wins against Naafiri 43.76% of the time which is 4.05% lower against Naafiri than the average opponent.
After normalising both champions win rates Jayce wins against Naafiri 3.75% less often than would be expected.
The average opponent winrate against Naafiriis 47.81%.
Annie
the Dark Child
Jayce wins against Annie 44.01% of the time which is 3.09% lower against Annie than the average opponent.
After normalising both champions win rates Jayce wins against Annie 2.80% less often than would be expected.
The average opponent winrate against Annieis 47.10%.
Jax
Grandmaster at Arms
Jayce wins against Jax 44.44% of the time which is 5.23% lower against Jax than the average opponent.
After normalising both champions win rates Jayce wins against Jax 4.93% less often than would be expected.
The average opponent winrate against Jaxis 49.67%.
Sion
The Undead Juggernaut
Jayce wins against Sion 44.92% of the time which is 4.16% lower against Sion than the average opponent.
After normalising both champions win rates Jayce wins against Sion 3.86% less often than would be expected.
The average opponent winrate against Sionis 49.08%.
Garen
The Might of Demacia
Jayce wins against Garen 44.94% of the time which is 4.08% lower against Garen than the average opponent.
After normalising both champions win rates Jayce wins against Garen 3.78% less often than would be expected.
The average opponent winrate against Garenis 49.02%.
Neeko
the Curious Chameleon
Jayce wins against Neeko 44.99% of the time which is 1.48% lower against Neeko than the average opponent.
After normalising both champions win rates Jayce wins against Neeko 1.19% less often than would be expected.
The average opponent winrate against Neekois 46.47%.
Anivia
the Cryophoenix
Jayce wins against Anivia 45.15% of the time which is 1.04% lower against Anivia than the average opponent.
After normalising both champions win rates Jayce wins against Anivia 0.75% less often than would be expected.
The average opponent winrate against Aniviais 46.19%.
Swain
the Noxian Grand General
Jayce wins against Swain 45.19% of the time which is 1.05% lower against Swain than the average opponent.
After normalising both champions win rates Jayce wins against Swain 0.76% less often than would be expected.
The average opponent winrate against Swainis 46.24%.
Diana
Scorn of the Moon
Jayce wins against Diana 45.41% of the time which is 1.14% lower against Diana than the average opponent.
After normalising both champions win rates Jayce wins against Diana 0.85% less often than would be expected.
The average opponent winrate against Dianais 46.55%.
Qiyana
Empress of the Elements
Jayce wins against Qiyana 45.59% of the time which is 2.43% lower against Qiyana than the average opponent.
After normalising both champions win rates Jayce wins against Qiyana 2.13% less often than would be expected.
The average opponent winrate against Qiyanais 48.02%.
Seraphine
the Starry-Eyed Songstress
Jayce wins against Seraphine 45.64% of the time which is 3.04% lower against Seraphine than the average opponent.
After normalising both champions win rates Jayce wins against Seraphine 2.74% less often than would be expected.
The average opponent winrate against Seraphineis 48.68%.
Renekton
the Butcher of the Sands
Jayce wins against Renekton 45.89% of the time which is 4.00% lower against Renekton than the average opponent.
After normalising both champions win rates Jayce wins against Renekton 3.70% less often than would be expected.
The average opponent winrate against Renektonis 49.89%.
Rumble
the Mechanized Menace
Jayce wins against Rumble 46.09% of the time which is 0.38% lower against Rumble than the average opponent.
After normalising both champions win rates Jayce wins against Rumble 0.09% less often than would be expected.
The average opponent winrate against Rumbleis 46.47%.
Akshan
the Rogue Sentinel
Jayce wins against Akshan 46.18% of the time which is 1.05% lower against Akshan than the average opponent.
After normalising both champions win rates Jayce wins against Akshan 0.76% less often than would be expected.
The average opponent winrate against Akshanis 47.23%.
Heimerdinger
the Revered Inventor
Jayce wins against Heimerdinger 46.18% of the time which is 1.68% lower against Heimerdinger than the average opponent.
After normalising both champions win rates Jayce wins against Heimerdinger 1.38% less often than would be expected.
The average opponent winrate against Heimerdingeris 47.86%.
Galio
the Colossus
Jayce wins against Galio 46.22% of the time which is 2.00% lower against Galio than the average opponent.
After normalising both champions win rates Jayce wins against Galio 1.70% less often than would be expected.
The average opponent winrate against Galiois 48.22%.
Kled
the Cantankerous Cavalier
Jayce wins against Kled 46.27% of the time which is 2.03% higher against Kled than the average opponent.
After normalising both champions win rates Jayce wins against Kled 2.31% more often than would be expected.
The average opponent winrate against Kledis 44.24%.
Pantheon
the Unbreakable Spear
Jayce wins against Pantheon 46.40% of the time which is 2.03% lower against Pantheon than the average opponent.
After normalising both champions win rates Jayce wins against Pantheon 1.73% less often than would be expected.
The average opponent winrate against Pantheonis 48.43%.
Cassiopeia
the Serpent's Embrace
Jayce wins against Cassiopeia 46.42% of the time which is 0.02% lower against Cassiopeia than the average opponent.
After normalising both champions win rates Jayce wins against Cassiopeia 0.27% more often than would be expected.
The average opponent winrate against Cassiopeiais 46.44%.
Twisted Fate
the Card Master
Jayce wins against Twisted Fate 46.57% of the time which is 1.49% lower against Twisted Fate than the average opponent.
After normalising both champions win rates Jayce wins against Twisted Fate 1.19% less often than would be expected.
The average opponent winrate against Twisted Fateis 48.06%.
Ekko
the Boy Who Shattered Time
Jayce wins against Ekko 46.68% of the time which is 0.05% higher against Ekko than the average opponent.
After normalising both champions win rates Jayce wins against Ekko 0.34% more often than would be expected.
The average opponent winrate against Ekkois 46.63%.
Zoe
the Aspect of Twilight
Jayce wins against Zoe 46.95% of the time which is 2.61% lower against Zoe than the average opponent.
After normalising both champions win rates Jayce wins against Zoe 2.31% less often than would be expected.
The average opponent winrate against Zoeis 49.56%.
Vladimir
the Crimson Reaper
Jayce wins against Vladimir 46.99% of the time which is 0.08% lower against Vladimir than the average opponent.
After normalising both champions win rates Jayce wins against Vladimir 0.21% more often than would be expected.
The average opponent winrate against Vladimiris 47.07%.
Malphite
Shard of the Monolith
Jayce wins against Malphite 47.02% of the time which is 0.45% lower against Malphite than the average opponent.
After normalising both champions win rates Jayce wins against Malphite 0.16% less often than would be expected.
The average opponent winrate against Malphiteis 47.47%.
Viktor
the Machine Herald
Jayce wins against Viktor 47.07% of the time which is 1.91% lower against Viktor than the average opponent.
After normalising both champions win rates Jayce wins against Viktor 1.61% less often than would be expected.
The average opponent winrate against Viktoris 48.98%.
Lissandra
the Ice Witch
Jayce wins against Lissandra 47.07% of the time which is 1.26% lower against Lissandra than the average opponent.
After normalising both champions win rates Jayce wins against Lissandra 0.96% less often than would be expected.
The average opponent winrate against Lissandrais 48.33%.
Kassadin
the Void Walker
Jayce wins against Kassadin 47.09% of the time which is 0.52% lower against Kassadin than the average opponent.
After normalising both champions win rates Jayce wins against Kassadin 0.23% less often than would be expected.
The average opponent winrate against Kassadinis 47.61%.
Fizz
the Tidal Trickster
Jayce wins against Fizz 47.20% of the time which is 0.77% higher against Fizz than the average opponent.
After normalising both champions win rates Jayce wins against Fizz 1.06% more often than would be expected.
The average opponent winrate against Fizzis 46.43%.
Malzahar
the Prophet of the Void
Jayce wins against Malzahar 47.21% of the time which is 1.67% lower against Malzahar than the average opponent.
After normalising both champions win rates Jayce wins against Malzahar 1.37% less often than would be expected.
The average opponent winrate against Malzaharis 48.88%.
K'Sante
the Pride of Nazumah
Jayce wins against K'Sante 47.34% of the time which is 3.19% lower against K'Sante than the average opponent.
After normalising both champions win rates Jayce wins against K'Sante 2.89% less often than would be expected.
The average opponent winrate against K'Santeis 50.53%.
Taliyah
the Stoneweaver
Jayce wins against Taliyah 47.35% of the time which is 0.03% higher against Taliyah than the average opponent.
After normalising both champions win rates Jayce wins against Taliyah 0.32% more often than would be expected.
The average opponent winrate against Taliyahis 47.32%.
Nasus
the Curator of the Sands
Jayce wins against Nasus 47.60% of the time which is 0.88% higher against Nasus than the average opponent.
After normalising both champions win rates Jayce wins against Nasus 1.17% more often than would be expected.
The average opponent winrate against Nasusis 46.72%.
Xerath
the Magus Ascendant
Jayce wins against Xerath 47.62% of the time which is 0.67% lower against Xerath than the average opponent.
After normalising both champions win rates Jayce wins against Xerath 0.37% less often than would be expected.
The average opponent winrate against Xerathis 48.29%.
Cho'Gath
the Terror of the Void
Jayce wins against Cho'Gath 47.64% of the time which is 1.49% lower against Cho'Gath than the average opponent.
After normalising both champions win rates Jayce wins against Cho'Gath 1.19% less often than would be expected.
The average opponent winrate against Cho'Gathis 49.13%.
Vex
the Gloomist
Jayce wins against Vex 47.71% of the time which is 0.62% lower against Vex than the average opponent.
After normalising both champions win rates Jayce wins against Vex 0.32% less often than would be expected.
The average opponent winrate against Vexis 48.33%.
Akali
the Rogue Assassin
Jayce wins against Akali 47.73% of the time which is 1.42% lower against Akali than the average opponent.
After normalising both champions win rates Jayce wins against Akali 1.12% less often than would be expected.
The average opponent winrate against Akaliis 49.15%.
Lux
the Lady of Luminosity
Jayce wins against Lux 47.73% of the time which is 0.45% lower against Lux than the average opponent.
After normalising both champions win rates Jayce wins against Lux 0.15% less often than would be expected.
The average opponent winrate against Luxis 48.18%.
Jhin
the Virtuoso
Jayce wins against Jhin 47.79% of the time which is 2.30% lower against Jhin than the average opponent.
After normalising both champions win rates Jayce wins against Jhin 2.00% less often than would be expected.
The average opponent winrate against Jhinis 50.09%.
Talon
the Blade's Shadow
Jayce wins against Talon 48.19% of the time which is 0.72% lower against Talon than the average opponent.
After normalising both champions win rates Jayce wins against Talon 0.42% less often than would be expected.
The average opponent winrate against Talonis 48.91%.
Brand
the Burning Vengeance
Jayce wins against Brand 48.31% of the time which is 0.43% lower against Brand than the average opponent.
After normalising both champions win rates Jayce wins against Brand 0.13% less often than would be expected.
The average opponent winrate against Brandis 48.74%.
Katarina
the Sinister Blade
Jayce wins against Katarina 48.39% of the time which is 0.01% higher against Katarina than the average opponent.
After normalising both champions win rates Jayce wins against Katarina 0.31% more often than would be expected.
The average opponent winrate against Katarinais 48.38%.
Lee Sin
the Blind Monk
Jayce wins against Lee Sin 48.41% of the time which is 1.23% lower against Lee Sin than the average opponent.
After normalising both champions win rates Jayce wins against Lee Sin 0.93% less often than would be expected.
The average opponent winrate against Lee Sinis 49.64%.
Pyke
the Bloodharbor Ripper
Jayce wins against Pyke 48.56% of the time which is 2.70% lower against Pyke than the average opponent.
After normalising both champions win rates Jayce wins against Pyke 2.40% less often than would be expected.
The average opponent winrate against Pykeis 51.26%.
Tristana
the Yordle Gunner
Jayce wins against Tristana 48.84% of the time which is 1.65% higher against Tristana than the average opponent.
After normalising both champions win rates Jayce wins against Tristana 1.94% more often than would be expected.
The average opponent winrate against Tristanais 47.19%.
Irelia
the Blade Dancer
Jayce wins against Irelia 49.12% of the time which is 0.48% higher against Irelia than the average opponent.
After normalising both champions win rates Jayce wins against Irelia 0.78% more often than would be expected.
The average opponent winrate against Ireliais 48.64%.
Teemo
the Swift Scout
Jayce wins against Teemo 49.16% of the time which is 3.58% higher against Teemo than the average opponent.
After normalising both champions win rates Jayce wins against Teemo 3.87% more often than would be expected.
The average opponent winrate against Teemois 45.58%.
Graves
the Outlaw
Jayce wins against Graves 49.31% of the time which is 0.67% higher against Graves than the average opponent.
After normalising both champions win rates Jayce wins against Graves 0.97% more often than would be expected.
The average opponent winrate against Gravesis 48.64%.
Sylas
the Unshackled
Jayce wins against Sylas 49.56% of the time which is 0.63% higher against Sylas than the average opponent.
After normalising both champions win rates Jayce wins against Sylas 0.93% more often than would be expected.
The average opponent winrate against Sylasis 48.93%.
Ryze
the Rune Mage
Jayce wins against Ryze 49.59% of the time which is 0.38% lower against Ryze than the average opponent.
After normalising both champions win rates Jayce wins against Ryze 0.08% less often than would be expected.
The average opponent winrate against Ryzeis 49.97%.
Yasuo
the Unforgiven
Jayce wins against Yasuo 49.63% of the time which is 0.25% higher against Yasuo than the average opponent.
After normalising both champions win rates Jayce wins against Yasuo 0.55% more often than would be expected.
The average opponent winrate against Yasuois 49.38%.
Aurelion Sol
The Star Forger
Jayce wins against Aurelion Sol 49.81% of the time which is 1.15% higher against Aurelion Sol than the average opponent.
After normalising both champions win rates Jayce wins against Aurelion Sol 1.45% more often than would be expected.
The average opponent winrate against Aurelion Solis 48.66%.
Azir
the Emperor of the Sands
Jayce wins against Azir 49.91% of the time which is 1.84% higher against Azir than the average opponent.
After normalising both champions win rates Jayce wins against Azir 2.14% more often than would be expected.
The average opponent winrate against Aziris 48.07%.
Viego
The Ruined King
Jayce wins against Viego 50.00% of the time which is 1.70% higher against Viego than the average opponent.
After normalising both champions win rates Jayce wins against Viego 2.00% more often than would be expected.
The average opponent winrate against Viegois 48.30%.
Veigar
the Tiny Master of Evil
Jayce wins against Veigar 50.15% of the time which is 0.22% lower against Veigar than the average opponent.
After normalising both champions win rates Jayce wins against Veigar 0.08% more often than would be expected.
The average opponent winrate against Veigaris 50.37%.
Syndra
the Dark Sovereign
Jayce wins against Syndra 50.21% of the time which is 0.20% lower against Syndra than the average opponent.
After normalising both champions win rates Jayce wins against Syndra 0.10% more often than would be expected.
The average opponent winrate against Syndrais 50.41%.
Vel'Koz
the Eye of the Void
Jayce wins against Vel'Koz 50.29% of the time which is 2.28% higher against Vel'Koz than the average opponent.
After normalising both champions win rates Jayce wins against Vel'Koz 2.58% more often than would be expected.
The average opponent winrate against Vel'Kozis 48.01%.
Aatrox
the Darkin Blade
Jayce wins against Aatrox 50.48% of the time which is 4.35% higher against Aatrox than the average opponent.
After normalising both champions win rates Jayce wins against Aatrox 4.64% more often than would be expected.
The average opponent winrate against Aatroxis 46.13%.
Zed
the Master of Shadows
Jayce wins against Zed 50.84% of the time which is 0.02% higher against Zed than the average opponent.
After normalising both champions win rates Jayce wins against Zed 0.32% more often than would be expected.
The average opponent winrate against Zedis 50.82%.
Nunu & Willump
the Boy and His Yeti
Jayce wins against Nunu & Willump 50.94% of the time which is 0.14% lower against Nunu & Willump than the average opponent.
After normalising both champions win rates Jayce wins against Nunu & Willump 0.16% more often than would be expected.
The average opponent winrate against Nunu & Willumpis 51.08%.
Orianna
the Lady of Clockwork
Jayce wins against Orianna 50.94% of the time which is 0.15% lower against Orianna than the average opponent.
After normalising both champions win rates Jayce wins against Orianna 0.15% more often than would be expected.
The average opponent winrate against Oriannais 51.09%.
Ahri
the Nine-Tailed Fox
Jayce wins against Ahri 51.00% of the time which is 0.46% higher against Ahri than the average opponent.
After normalising both champions win rates Jayce wins against Ahri 0.76% more often than would be expected.
The average opponent winrate against Ahriis 50.54%.
Karma
the Enlightened One
Jayce wins against Karma 51.44% of the time which is 0.01% lower against Karma than the average opponent.
After normalising both champions win rates Jayce wins against Karma 0.29% more often than would be expected.
The average opponent winrate against Karmais 51.45%.
Sett
the Boss
Jayce wins against Sett 51.46% of the time which is 3.62% higher against Sett than the average opponent.
After normalising both champions win rates Jayce wins against Sett 3.92% more often than would be expected.
The average opponent winrate against Settis 47.84%.
LeBlanc
the Deceiver
Jayce wins against LeBlanc 51.53% of the time which is 0.90% lower against LeBlanc than the average opponent.
After normalising both champions win rates Jayce wins against LeBlanc 0.60% less often than would be expected.
The average opponent winrate against LeBlancis 52.43%.
Ziggs
the Hexplosives Expert
Jayce wins against Ziggs 51.61% of the time which is 0.20% higher against Ziggs than the average opponent.
After normalising both champions win rates Jayce wins against Ziggs 0.50% more often than would be expected.
The average opponent winrate against Ziggsis 51.41%.
Lucian
the Purifier
Jayce wins against Lucian 51.74% of the time which is 0.83% lower against Lucian than the average opponent.
After normalising both champions win rates Jayce wins against Lucian 0.53% less often than would be expected.
The average opponent winrate against Lucianis 52.57%.
Yone
the Unforgotten
Jayce wins against Yone 52.15% of the time which is 2.22% higher against Yone than the average opponent.
After normalising both champions win rates Jayce wins against Yone 2.52% more often than would be expected.
The average opponent winrate against Yoneis 49.93%.
Kai'Sa
Daughter of the Void
Jayce wins against Kai'Sa 52.24% of the time which is 1.76% lower against Kai'Sa than the average opponent.
After normalising both champions win rates Jayce wins against Kai'Sa 1.47% less often than would be expected.
The average opponent winrate against Kai'Sais 54.00%.
Corki
the Daring Bombardier
Jayce wins against Corki 52.28% of the time which is 1.23% higher against Corki than the average opponent.
After normalising both champions win rates Jayce wins against Corki 1.53% more often than would be expected.
The average opponent winrate against Corkiis 51.05%.
Varus
the Arrow of Retribution
Jayce wins against Varus 52.66% of the time which is 0.64% lower against Varus than the average opponent.
After normalising both champions win rates Jayce wins against Varus 0.34% less often than would be expected.
The average opponent winrate against Varusis 53.30%.
Morgana
the Fallen
Jayce wins against Morgana 53.30% of the time which is 5.26% higher against Morgana than the average opponent.
After normalising both champions win rates Jayce wins against Morgana 5.56% more often than would be expected.
The average opponent winrate against Morganais 48.04%.
Hwei
the Visionary
Jayce wins against Hwei 53.38% of the time which is 0.51% lower against Hwei than the average opponent.
After normalising both champions win rates Jayce wins against Hwei 0.22% less often than would be expected.
The average opponent winrate against Hweiis 53.89%.
Tryndamere
the Barbarian King
Jayce wins against Tryndamere 53.48% of the time which is 7.43% higher against Tryndamere than the average opponent.
After normalising both champions win rates Jayce wins against Tryndamere 7.72% more often than would be expected.
The average opponent winrate against Tryndamereis 46.05%.
Ezreal
the Prodigal Explorer
Jayce wins against Ezreal 54.25% of the time which is 2.84% lower against Ezreal than the average opponent.
After normalising both champions win rates Jayce wins against Ezreal 2.56% less often than would be expected.
The average opponent winrate against Ezrealis 57.09%.
Gangplank
the Saltwater Scourge
Jayce wins against Gangplank 54.52% of the time which is 5.23% higher against Gangplank than the average opponent.
After normalising both champions win rates Jayce wins against Gangplank 5.53% more often than would be expected.
The average opponent winrate against Gangplankis 49.29%.
Caitlyn
the Sheriff of Piltover
Jayce wins against Caitlyn 55.02% of the time which is 1.75% higher against Caitlyn than the average opponent.
After normalising both champions win rates Jayce wins against Caitlyn 2.05% more often than would be expected.
The average opponent winrate against Caitlynis 53.27%.
Karthus
the Deathsinger
Jayce wins against Karthus 55.03% of the time which is 2.49% higher against Karthus than the average opponent.
After normalising both champions win rates Jayce wins against Karthus 2.79% more often than would be expected.
The average opponent winrate against Karthusis 52.54%.
Vayne
the Night Hunter
Jayce wins against Vayne 63.11% of the time which is 13.88% higher against Vayne than the average opponent.
After normalising both champions win rates Jayce wins against Vayne 14.18% more often than would be expected.
The average opponent winrate against Vayneis 49.23%.