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.
Platinum+ Champions Analysed: 66,410,141
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 jungle vs jungle Counters
Presently there is insufficent games played by Jayce jungle on Patch 30 to determine the strongest jungle counters. A matchup requires a minimum of 100 games to be displayed.
Kayn
the Shadow Reaper
Jayce wins against Kayn 41.44% of the time which is 5.99% lower against Kayn than the average opponent.
After normalising both champions win rates Jayce wins against Kayn 1.23% less often than would be expected.
The average opponent winrate against Kaynis 47.43%.
Graves
the Outlaw
Jayce wins against Graves 44.17% of the time which is 4.32% lower against Graves than the average opponent.
After normalising both champions win rates Jayce wins against Graves 0.47% more often than would be expected.
The average opponent winrate against Gravesis 48.49%.
Lee Sin
the Blind Monk
Jayce wins against Lee Sin 44.33% of the time which is 4.90% lower against Lee Sin than the average opponent.
After normalising both champions win rates Jayce wins against Lee Sin 0.09% less often than would be expected.
The average opponent winrate against Lee Sinis 49.23%.
Viego
The Ruined King
Jayce wins against Viego 45.83% of the time which is 2.72% lower against Viego than the average opponent.
After normalising both champions win rates Jayce wins against Viego 2.07% more often than would be expected.
The average opponent winrate against Viegois 48.55%.