

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.
Bronze Champions Analysed: 30,765,677
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.


Sion Counters
Sion top vs middle Counters
Sion top on Patch 30 is the strongest counter to middle champions of Ashe, Xin Zhao & Seraphine. While Sion top is countered most by middle champions of Sett, Tryndamere & Swain. Below is a detailed breakdown of Sion top counters against middle champions with a minimum of 100 games.


Sett
ลูกพี่นักสู้
Sion wins against Sett 38.98% of the time which is 6.84% lower against Sett than the average opponent.
After normalising both champions win rates Sion wins against Sett 7.60% less often than would be expected.
The average opponent winrate against Sett is 45.82%.


Tryndamere
ราชาคนเถื่อน
Sion wins against Tryndamere 40.16% of the time which is 8.46% lower against Tryndamere than the average opponent.
After normalising both champions win rates Sion wins against Tryndamere 9.23% less often than would be expected.
The average opponent winrate against Tryndamere is 48.62%.


Swain
จอมพลแห่งน็อกซัส
Sion wins against Swain 45.17% of the time which is 3.18% lower against Swain than the average opponent.
After normalising both champions win rates Sion wins against Swain 3.95% less often than would be expected.
The average opponent winrate against Swain is 48.35%.


Briar
ความหิวโหยที่ถูกจองจำ
Sion wins against Briar 45.24% of the time which is 0.38% lower against Briar than the average opponent.
After normalising both champions win rates Sion wins against Briar 1.14% less often than would be expected.
The average opponent winrate against Briar is 45.62%.


Rumble
ภัยพิบัติจักรกล
Sion wins against Rumble 45.37% of the time which is 2.09% lower against Rumble than the average opponent.
After normalising both champions win rates Sion wins against Rumble 2.86% less often than would be expected.
The average opponent winrate against Rumble is 47.46%.


Gangplank
หายนะแห่งท้องทะเล
Sion wins against Gangplank 45.66% of the time which is 6.21% lower against Gangplank than the average opponent.
After normalising both champions win rates Sion wins against Gangplank 6.98% less often than would be expected.
The average opponent winrate against Gangplank is 51.87%.


Renekton
มือเชือดแห่งทะเลทราย
Sion wins against Renekton 45.75% of the time which is 2.01% lower against Renekton than the average opponent.
After normalising both champions win rates Sion wins against Renekton 2.78% less often than would be expected.
The average opponent winrate against Renekton is 47.76%.


Anivia
ฟีนิกซ์น้ำแข็ง
Sion wins against Anivia 46.42% of the time which is 3.52% lower against Anivia than the average opponent.
After normalising both champions win rates Sion wins against Anivia 4.29% less often than would be expected.
The average opponent winrate against Anivia is 49.94%.


Mordekaiser
ขุนศึกเหล็กผู้หวนคืน
Sion wins against Mordekaiser 46.48% of the time which is 0.41% lower against Mordekaiser than the average opponent.
After normalising both champions win rates Sion wins against Mordekaiser 1.18% less often than would be expected.
The average opponent winrate against Mordekaiser is 46.89%.


Irelia
คมดาบเริงระบำ
Sion wins against Irelia 47.15% of the time which is 2.44% lower against Irelia than the average opponent.
After normalising both champions win rates Sion wins against Irelia 3.21% less often than would be expected.
The average opponent winrate against Irelia is 49.59%.


Aurelion Sol
ผู้รังสรรค์ดวงดารา
Sion wins against Aurelion Sol 47.65% of the time which is 1.60% lower against Aurelion Sol than the average opponent.
After normalising both champions win rates Sion wins against Aurelion Sol 2.37% less often than would be expected.
The average opponent winrate against Aurelion Sol is 49.25%.


Yorick
ผู้นำทางวิญญาณ
Sion wins against Yorick 47.78% of the time which is 0.94% higher against Yorick than the average opponent.
After normalising both champions win rates Sion wins against Yorick 0.17% more often than would be expected.
The average opponent winrate against Yorick is 46.84%.


Morgana
ผู้ละทิ้งเทพ
Sion wins against Morgana 48.26% of the time which is 0.23% higher against Morgana than the average opponent.
After normalising both champions win rates Sion wins against Morgana 0.54% less often than would be expected.
The average opponent winrate against Morgana is 48.03%.


Cassiopeia
ชะตาอสรพิษ
Sion wins against Cassiopeia 48.68% of the time which is 3.26% lower against Cassiopeia than the average opponent.
After normalising both champions win rates Sion wins against Cassiopeia 4.03% less often than would be expected.
The average opponent winrate against Cassiopeia is 51.94%.


Brand
เพลิงแห่งความแค้น
Sion wins against Brand 48.74% of the time which is 0.12% higher against Brand than the average opponent.
After normalising both champions win rates Sion wins against Brand 0.65% less often than would be expected.
The average opponent winrate against Brand is 48.62%.


Galio
ยักษ์ศิลา
Sion wins against Galio 48.82% of the time which is 0.32% lower against Galio than the average opponent.
After normalising both champions win rates Sion wins against Galio 1.09% less often than would be expected.
The average opponent winrate against Galio is 49.14%.


Vel'Koz
เนตรแห่งวอยด์
Sion wins against Vel'Koz 48.88% of the time which is 0.53% lower against Vel'Koz than the average opponent.
After normalising both champions win rates Sion wins against Vel'Koz 1.30% less often than would be expected.
The average opponent winrate against Vel'Koz is 49.41%.


Talon
คมมีดในเงามืด
Sion wins against Talon 49.04% of the time which is 3.01% lower against Talon than the average opponent.
After normalising both champions win rates Sion wins against Talon 3.78% less often than would be expected.
The average opponent winrate against Talon is 52.05%.


Malzahar
ประกาศกแห่งวอยด์
Sion wins against Malzahar 49.16% of the time which is 1.13% higher against Malzahar than the average opponent.
After normalising both champions win rates Sion wins against Malzahar 0.36% more often than would be expected.
The average opponent winrate against Malzahar is 48.03%.


Vladimir
ยมทูตสีชาด
Sion wins against Vladimir 49.23% of the time which is 1.38% lower against Vladimir than the average opponent.
After normalising both champions win rates Sion wins against Vladimir 2.15% less often than would be expected.
The average opponent winrate against Vladimir is 50.61%.


Smolder
มังกรน้อยคะนองเพลิง
Sion wins against Smolder 49.24% of the time which is 2.26% lower against Smolder than the average opponent.
After normalising both champions win rates Sion wins against Smolder 3.03% less often than would be expected.
The average opponent winrate against Smolder is 51.50%.


Hwei
ผู้เปี่ยมด้วยนิมิต
Sion wins against Hwei 49.52% of the time which is 0.97% lower against Hwei than the average opponent.
After normalising both champions win rates Sion wins against Hwei 1.74% less often than would be expected.
The average opponent winrate against Hwei is 50.49%.


Yasuo
ผู้ไม่อาจให้อภัย
Sion wins against Yasuo 49.65% of the time which is 0.13% higher against Yasuo than the average opponent.
After normalising both champions win rates Sion wins against Yasuo 0.64% less often than would be expected.
The average opponent winrate against Yasuo is 49.52%.


Veigar
ยอดวายร้ายตัวจิ๋ว
Sion wins against Veigar 49.72% of the time which is 1.42% higher against Veigar than the average opponent.
After normalising both champions win rates Sion wins against Veigar 0.65% more often than would be expected.
The average opponent winrate against Veigar is 48.30%.


Viktor
ผู้นำสารแห่งอาร์เคน
Sion wins against Viktor 49.79% of the time which is 0.57% lower against Viktor than the average opponent.
After normalising both champions win rates Sion wins against Viktor 1.34% less often than would be expected.
The average opponent winrate against Viktor is 50.36%.


Fizz
จอมป่วนแห่งเกลียวคลื่น
Sion wins against Fizz 49.83% of the time which is 0.66% higher against Fizz than the average opponent.
After normalising both champions win rates Sion wins against Fizz 0.11% less often than would be expected.
The average opponent winrate against Fizz is 49.17%.


Diana
จันทราเย้ยหยัน
Sion wins against Diana 49.94% of the time which is 0.93% higher against Diana than the average opponent.
After normalising both champions win rates Sion wins against Diana 0.16% more often than would be expected.
The average opponent winrate against Diana is 49.01%.


Naafiri
อสูรร้ายร้อยเขี้ยว
Sion wins against Naafiri 49.95% of the time which is 1.90% higher against Naafiri than the average opponent.
After normalising both champions win rates Sion wins against Naafiri 1.13% more often than would be expected.
The average opponent winrate against Naafiri is 48.05%.


Xerath
จอมเวทเทพจุติ
Sion wins against Xerath 49.98% of the time which is 1.04% higher against Xerath than the average opponent.
After normalising both champions win rates Sion wins against Xerath 0.27% more often than would be expected.
The average opponent winrate against Xerath is 48.94%.


Kennen
แก่นพายุโหม
Sion wins against Kennen 50.00% of the time which is 0.28% higher against Kennen than the average opponent.
After normalising both champions win rates Sion wins against Kennen 0.49% less often than would be expected.
The average opponent winrate against Kennen is 49.72%.


Twitch
หนูกาฬโรค
Sion wins against Twitch 50.00% of the time which is 0.05% higher against Twitch than the average opponent.
After normalising both champions win rates Sion wins against Twitch 0.72% less often than would be expected.
The average opponent winrate against Twitch is 49.95%.


Lux
สตรีแห่งแสงสว่าง
Sion wins against Lux 50.15% of the time which is 1.49% higher against Lux than the average opponent.
After normalising both champions win rates Sion wins against Lux 0.72% more often than would be expected.
The average opponent winrate against Lux is 48.66%.


Kayle
สัญลักษณ์แห่งความเที่ยงธรรม
Sion wins against Kayle 50.15% of the time which is 2.16% higher against Kayle than the average opponent.
After normalising both champions win rates Sion wins against Kayle 1.39% more often than would be expected.
The average opponent winrate against Kayle is 47.99%.


Pantheon
หอกไร้เทียมทาน
Sion wins against Pantheon 50.42% of the time which is 1.45% higher against Pantheon than the average opponent.
After normalising both champions win rates Sion wins against Pantheon 0.68% more often than would be expected.
The average opponent winrate against Pantheon is 48.97%.


Cho'Gath
มฤตยูแห่งวอยด์
Sion wins against Cho'Gath 50.42% of the time which is 1.70% higher against Cho'Gath than the average opponent.
After normalising both champions win rates Sion wins against Cho'Gath 0.93% more often than would be expected.
The average opponent winrate against Cho'Gath is 48.72%.


Yone
ผู้ไม่มีวันถูกลืม
Sion wins against Yone 50.43% of the time which is 0.63% lower against Yone than the average opponent.
After normalising both champions win rates Sion wins against Yone 1.40% less often than would be expected.
The average opponent winrate against Yone is 51.06%.


Malphite
เศษเสี้ยวผืนพสุธา
Sion wins against Malphite 50.44% of the time which is 1.09% higher against Malphite than the average opponent.
After normalising both champions win rates Sion wins against Malphite 0.32% more often than would be expected.
The average opponent winrate against Malphite is 49.35%.


Aurora
แม่มดทะลุมิติ
Sion wins against Aurora 50.57% of the time which is 1.25% lower against Aurora than the average opponent.
After normalising both champions win rates Sion wins against Aurora 2.02% less often than would be expected.
The average opponent winrate against Aurora is 51.82%.


Ziggs
ผู้เชี่ยวชาญระเบิดเฮ็กซ์
Sion wins against Ziggs 50.82% of the time which is 0.88% higher against Ziggs than the average opponent.
After normalising both champions win rates Sion wins against Ziggs 0.11% more often than would be expected.
The average opponent winrate against Ziggs is 49.94%.


Nasus
ภัณฑารักษ์แห่งผืนทราย
Sion wins against Nasus 50.85% of the time which is 2.14% higher against Nasus than the average opponent.
After normalising both champions win rates Sion wins against Nasus 1.37% more often than would be expected.
The average opponent winrate against Nasus is 48.71%.


Akali
มือสังหารไร้กฎเกณฑ์
Sion wins against Akali 50.90% of the time which is 0.36% higher against Akali than the average opponent.
After normalising both champions win rates Sion wins against Akali 0.41% less often than would be expected.
The average opponent winrate against Akali is 50.54%.


Ekko
เด็กชายผู้สลายเวลา
Sion wins against Ekko 51.19% of the time which is 1.76% higher against Ekko than the average opponent.
After normalising both champions win rates Sion wins against Ekko 0.99% more often than would be expected.
The average opponent winrate against Ekko is 49.43%.


Heimerdinger
นักประดิษฐ์ผู้โด่งดัง
Sion wins against Heimerdinger 51.65% of the time which is 4.26% higher against Heimerdinger than the average opponent.
After normalising both champions win rates Sion wins against Heimerdinger 3.49% more often than would be expected.
The average opponent winrate against Heimerdinger is 47.39%.


Zyra
การปฏิวัติแห่งหนาม
Sion wins against Zyra 51.66% of the time which is 1.95% higher against Zyra than the average opponent.
After normalising both champions win rates Sion wins against Zyra 1.18% more often than would be expected.
The average opponent winrate against Zyra is 49.71%.


Azir
จักรพรรดิแห่งทะเลทราย
Sion wins against Azir 51.67% of the time which is 2.32% lower against Azir than the average opponent.
After normalising both champions win rates Sion wins against Azir 3.08% less often than would be expected.
The average opponent winrate against Azir is 53.99%.


Kassadin
ผู้ท่องวอยด์
Sion wins against Kassadin 51.67% of the time which is 0.30% higher against Kassadin than the average opponent.
After normalising both champions win rates Sion wins against Kassadin 0.47% less often than would be expected.
The average opponent winrate against Kassadin is 51.37%.


Syndra
อำนาจเหนือพลังมืด
Sion wins against Syndra 51.96% of the time which is 0.83% higher against Syndra than the average opponent.
After normalising both champions win rates Sion wins against Syndra 0.06% more often than would be expected.
The average opponent winrate against Syndra is 51.13%.


Vex
ผู้มืดหม่น
Sion wins against Vex 52.14% of the time which is 2.34% higher against Vex than the average opponent.
After normalising both champions win rates Sion wins against Vex 1.57% more often than would be expected.
The average opponent winrate against Vex is 49.80%.


LeBlanc
จ้าวแห่งการหลอกลวง
Sion wins against LeBlanc 52.45% of the time which is 0.57% higher against LeBlanc than the average opponent.
After normalising both champions win rates Sion wins against LeBlanc 0.20% less often than would be expected.
The average opponent winrate against LeBlanc is 51.88%.


Ryze
นักเวทรูน
Sion wins against Ryze 52.45% of the time which is 1.09% higher against Ryze than the average opponent.
After normalising both champions win rates Sion wins against Ryze 0.32% more often than would be expected.
The average opponent winrate against Ryze is 51.36%.


Annie
ธิดาแห่งความมืด
Sion wins against Annie 52.54% of the time which is 1.54% higher against Annie than the average opponent.
After normalising both champions win rates Sion wins against Annie 0.77% more often than would be expected.
The average opponent winrate against Annie is 51.00%.


Zed
จ้าวแห่งเงา
Sion wins against Zed 52.75% of the time which is 0.25% higher against Zed than the average opponent.
After normalising both champions win rates Sion wins against Zed 0.52% less often than would be expected.
The average opponent winrate against Zed is 52.50%.


Ahri
จิ้งจอกเก้าหาง
Sion wins against Ahri 53.15% of the time which is 2.11% higher against Ahri than the average opponent.
After normalising both champions win rates Sion wins against Ahri 1.34% more often than would be expected.
The average opponent winrate against Ahri is 51.04%.


Varus
ศรแห่งการลงทัณฑ์
Sion wins against Varus 53.19% of the time which is 0.75% lower against Varus than the average opponent.
After normalising both champions win rates Sion wins against Varus 1.51% less often than would be expected.
The average opponent winrate against Varus is 53.94%.


Teemo
หน่วยสอดแนมผู้ว่องไว
Sion wins against Teemo 53.28% of the time which is 5.98% higher against Teemo than the average opponent.
After normalising both champions win rates Sion wins against Teemo 5.21% more often than would be expected.
The average opponent winrate against Teemo is 47.30%.


Miss Fortune
นักล่าค่าหัว
Sion wins against Miss Fortune 53.33% of the time which is 0.09% lower against Miss Fortune than the average opponent.
After normalising both champions win rates Sion wins against Miss Fortune 0.85% less often than would be expected.
The average opponent winrate against Miss Fortune is 53.42%.


Lissandra
แม่มดน้ำแข็ง
Sion wins against Lissandra 53.33% of the time which is 2.06% higher against Lissandra than the average opponent.
After normalising both champions win rates Sion wins against Lissandra 1.29% more often than would be expected.
The average opponent winrate against Lissandra is 51.27%.


Sylas
ผู้ปลดโซ่ตรวน
Sion wins against Sylas 53.53% of the time which is 1.65% higher against Sylas than the average opponent.
After normalising both champions win rates Sion wins against Sylas 0.88% more often than would be expected.
The average opponent winrate against Sylas is 51.88%.


Mel
เงาสะท้อนแห่งจิตวิญญาณ
Sion wins against Mel 53.57% of the time which is 2.11% higher against Mel than the average opponent.
After normalising both champions win rates Sion wins against Mel 1.34% more often than would be expected.
The average opponent winrate against Mel is 51.46%.


Orianna
คุณหญิงจักรกล
Sion wins against Orianna 53.75% of the time which is 1.25% higher against Orianna than the average opponent.
After normalising both champions win rates Sion wins against Orianna 0.48% more often than would be expected.
The average opponent winrate against Orianna is 52.50%.


Twisted Fate
จ้าวแห่งไพ่
Sion wins against Twisted Fate 53.95% of the time which is 1.18% higher against Twisted Fate than the average opponent.
After normalising both champions win rates Sion wins against Twisted Fate 0.42% more often than would be expected.
The average opponent winrate against Twisted Fate is 52.77%.


Garen
พลังแห่งเดมาเซีย
Sion wins against Garen 53.95% of the time which is 6.79% higher against Garen than the average opponent.
After normalising both champions win rates Sion wins against Garen 6.02% more often than would be expected.
The average opponent winrate against Garen is 47.16%.


Akshan
องครักษ์นอกคอก
Sion wins against Akshan 54.05% of the time which is 1.47% higher against Akshan than the average opponent.
After normalising both champions win rates Sion wins against Akshan 0.71% more often than would be expected.
The average opponent winrate against Akshan is 52.58%.


Quinn
ปีกแห่งเดมาเซีย
Sion wins against Quinn 54.30% of the time which is 5.42% higher against Quinn than the average opponent.
After normalising both champions win rates Sion wins against Quinn 4.65% more often than would be expected.
The average opponent winrate against Quinn is 48.88%.


Katarina
คมมีดสังหาร
Sion wins against Katarina 54.31% of the time which is 1.85% higher against Katarina than the average opponent.
After normalising both champions win rates Sion wins against Katarina 1.08% more often than would be expected.
The average opponent winrate against Katarina is 52.46%.


Neeko
คามิเลี่ยนจอมสอดรู้
Sion wins against Neeko 54.32% of the time which is 4.19% higher against Neeko than the average opponent.
After normalising both champions win rates Sion wins against Neeko 3.42% more often than would be expected.
The average opponent winrate against Neeko is 50.13%.


Viego
ราชาผู้สูญสลาย
Sion wins against Viego 54.48% of the time which is 3.86% higher against Viego than the average opponent.
After normalising both champions win rates Sion wins against Viego 3.09% more often than would be expected.
The average opponent winrate against Viego is 50.62%.


Ezreal
นักสำรวจอัจฉริยะ
Sion wins against Ezreal 54.59% of the time which is 1.92% lower against Ezreal than the average opponent.
After normalising both champions win rates Sion wins against Ezreal 2.66% less often than would be expected.
The average opponent winrate against Ezreal is 56.51%.


Zoe
พลังสถิตแห่งสนธยา
Sion wins against Zoe 54.69% of the time which is 1.63% higher against Zoe than the average opponent.
After normalising both champions win rates Sion wins against Zoe 0.87% more often than would be expected.
The average opponent winrate against Zoe is 53.06%.


Jayce
ผู้ปกปักอนาคต
Sion wins against Jayce 54.76% of the time which is 2.75% higher against Jayce than the average opponent.
After normalising both champions win rates Sion wins against Jayce 1.98% more often than would be expected.
The average opponent winrate against Jayce is 52.01%.


Kai'Sa
บุตรีแห่งวอยด์
Sion wins against Kai'Sa 54.96% of the time which is 1.10% higher against Kai'Sa than the average opponent.
After normalising both champions win rates Sion wins against Kai'Sa 0.34% more often than would be expected.
The average opponent winrate against Kai'Sa is 53.86%.


Tristana
มือปืนยอร์เดิล
Sion wins against Tristana 55.46% of the time which is 1.76% higher against Tristana than the average opponent.
After normalising both champions win rates Sion wins against Tristana 1.00% more often than would be expected.
The average opponent winrate against Tristana is 53.70%.


Qiyana
จักรพรรดินีแห่งสรรพธาตุ
Sion wins against Qiyana 55.48% of the time which is 0.21% higher against Qiyana than the average opponent.
After normalising both champions win rates Sion wins against Qiyana 0.54% less often than would be expected.
The average opponent winrate against Qiyana is 55.27%.


Caitlyn
นายอำเภอแห่งพิลโทเวอร์
Sion wins against Caitlyn 55.91% of the time which is 3.54% higher against Caitlyn than the average opponent.
After normalising both champions win rates Sion wins against Caitlyn 2.77% more often than would be expected.
The average opponent winrate against Caitlyn is 52.37%.


Corki
พลระเบิดผู้อาจหาญ
Sion wins against Corki 56.38% of the time which is 0.78% higher against Corki than the average opponent.
After normalising both champions win rates Sion wins against Corki 0.03% more often than would be expected.
The average opponent winrate against Corki is 55.60%.


Vayne
นักล่ารัตติกาล
Sion wins against Vayne 56.64% of the time which is 6.75% higher against Vayne than the average opponent.
After normalising both champions win rates Sion wins against Vayne 5.98% more often than would be expected.
The average opponent winrate against Vayne is 49.89%.


Gragas
ขี้เมาจอมหาเรื่อง
Sion wins against Gragas 57.43% of the time which is 4.41% higher against Gragas than the average opponent.
After normalising both champions win rates Sion wins against Gragas 3.65% more often than would be expected.
The average opponent winrate against Gragas is 53.02%.


Taliyah
ผู้ควบคุมคลื่นศิลา
Sion wins against Taliyah 57.66% of the time which is 3.05% higher against Taliyah than the average opponent.
After normalising both champions win rates Sion wins against Taliyah 2.29% more often than would be expected.
The average opponent winrate against Taliyah is 54.61%.


Karma
ผู้รู้แจ้ง
Sion wins against Karma 58.12% of the time which is 6.35% higher against Karma than the average opponent.
After normalising both champions win rates Sion wins against Karma 5.58% more often than would be expected.
The average opponent winrate against Karma is 51.77%.


Lucian
ผู้ชำระล้างความมืด
Sion wins against Lucian 58.57% of the time which is 3.71% higher against Lucian than the average opponent.
After normalising both champions win rates Sion wins against Lucian 2.96% more often than would be expected.
The average opponent winrate against Lucian is 54.86%.


Yunara
ศรัทธาชั่วนิรันดร์
Sion wins against Yunara 60.00% of the time which is 2.99% higher against Yunara than the average opponent.
After normalising both champions win rates Sion wins against Yunara 2.25% more often than would be expected.
The average opponent winrate against Yunara is 57.01%.


Jhin
ศิลปินวิปริต
Sion wins against Jhin 60.00% of the time which is 8.30% higher against Jhin than the average opponent.
After normalising both champions win rates Sion wins against Jhin 7.53% more often than would be expected.
The average opponent winrate against Jhin is 51.70%.


Seraphine
นักร้องสาวพราวประกาย
Sion wins against Seraphine 61.90% of the time which is 9.16% higher against Seraphine than the average opponent.
After normalising both champions win rates Sion wins against Seraphine 8.40% more often than would be expected.
The average opponent winrate against Seraphine is 52.74%.


Xin Zhao
ผู้พิทักษ์แห่งเดมาเซีย
Sion wins against Xin Zhao 62.84% of the time which is 11.98% higher against Xin Zhao than the average opponent.
After normalising both champions win rates Sion wins against Xin Zhao 11.21% more often than would be expected.
The average opponent winrate against Xin Zhao is 50.86%.


Ashe
ศรเยือกแข็ง
Sion wins against Ashe 63.64% of the time which is 9.18% higher against Ashe than the average opponent.
After normalising both champions win rates Sion wins against Ashe 8.42% more often than would be expected.
The average opponent winrate against Ashe is 54.46%.