Xin has a 58% win ratio for experienced players.
He's sitting at a pretty comfortable 49% for the general populous as well, and his win rate spikes for people who've used him a lot. That's really pretty darn decent, and a lot of champions who are called OP by the boards (*COUGH lee sin) (*COUGH leblanc) are much, much lower in bothe categories. And despite that, Riot's giving him one of the biggest buffs I've ever seen a champion get.
Logic?