Pantheon has had a 53%-55% win rate for about 6 months now if not more
http://www.leagueofgraphs.com/champions/stats/pantheon/diamond
Are we ever going to talk about this champion?
Not only are his stats absurdly high for top lane which would be enough to consider nerfing him, but he also is one of the most uninteractive champions in the entire game
There is no interacting with pantheon, you either outsustain/outrange his poke or you lose, it's that simple. You can't engage on him because stun + highest base MS in game means he can just get away from you, and even if you do force an all in with him, passive + stun + passive means you lose at least 2 autoattacks which is huge early game.