I WAS talking about top lane...
And you clearly don't know how statistics work. The numbers may be harder to rely on or skewed with a smaller sample size, but that's not comparable to being the fastest person on Facebook in the room you're standing in (or whatever the hell horrible analogy you were making). The difference is that every time Karthus wins a game, he's in a game with 10 other people, 5 of which who lose, and he wins more often than pretty much everyone else (except Sion/Yorick, depending on which graph). And he was played in 1.1% of games for normal queue. 1.1% of MILLIONS is a big number, and a large enough sample size, to be honest. Don't know what you're wanting there. Pick rate isn't important when the numbers are as big as they are.
Even in Plat+ for since the patch, there are over 13.9 MILLION games. Even though Karthus was only played top in 0.2% of games, which of course is a round number because with a number that small a lot of rounding WAS involved, however, it's between 0.15% to 0.24%). 0.15% of games would be 20,850 games, and that's on the LOW end. 0.2% is 27,800. So anyway, are you telling me 27,800 games isn't enough for a good sample size? Really? Karthus won 53.3% of the games, or approximately 14,817 games out of 27,800. You don't think that's impressive odds?
Also, I looked at the chart wrong. He's 4th for mid, not 1st, on the normal one for daily (but still #1 on mid on Plat+ for since the patch). Anywho, we also don't know for sure which lane everyone went to in those games anyway but just saying mid champions in general there. Still 2nd for top though, only Yorick has higher win rate.