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: 20,044,124
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 14.18 to determine the strongest top counters. A matchup requires a minimum of 100 games to be displayed.
Garen
Force de Demacia
Karthus wins against Garen 46.79% of the time which is 0.38% lower against Garen than the average opponent.
After normalising both champions win rates Karthus wins against Garen 2.88% less often than would be expected.
The average opponent winrate against Garenis 47.17%.
Jax
Maître d'armes
Karthus wins against Jax 50.00% of the time which is 1.31% higher against Jax than the average opponent.
After normalising both champions win rates Karthus wins against Jax 1.19% less often than would be expected.
The average opponent winrate against Jaxis 48.69%.
Aatrox
Épée des Darkin
Karthus wins against Aatrox 51.27% of the time which is 2.54% higher against Aatrox than the average opponent.
After normalising both champions win rates Karthus wins against Aatrox 0.04% more often than would be expected.
The average opponent winrate against Aatroxis 48.73%.
Vladimir
Saigneur pourpre
Karthus wins against Vladimir 52.17% of the time which is 0.93% higher against Vladimir than the average opponent.
After normalising both champions win rates Karthus wins against Vladimir 1.57% less often than would be expected.
The average opponent winrate against Vladimiris 51.24%.