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.
Diamond+ Champions Analysed: 10,871,447
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.
Karthus Counters
Karthus middle vs top Counters
Presently there is insufficent games played by Karthus middle on Patch 14.5 to determine the strongest top counters. A matchup requires a minimum of 100 games to be displayed.
Darius
Main de Noxus
Karthus wins against Darius 45.19% of the time which is 1.29% lower against Darius than the average opponent.
After normalising both champions win rates Karthus wins against Darius 6.76% less often than would be expected.
The average opponent winrate against Dariusis 46.48%.
Aatrox
Épée des Darkin
Karthus wins against Aatrox 47.88% of the time which is 0.62% lower against Aatrox than the average opponent.
After normalising both champions win rates Karthus wins against Aatrox 6.09% less often than would be expected.
The average opponent winrate against Aatroxis 48.50%.
Renekton
Dévoreur des sables
Karthus wins against Renekton 51.40% of the time which is 3.76% higher against Renekton than the average opponent.
After normalising both champions win rates Karthus wins against Renekton 1.71% less often than would be expected.
The average opponent winrate against Renektonis 47.64%.