Predict Yasuo's winrate in 4.18!

BASE HEALTH 512 => 462 BASE MOVEMENT SPEED 350 => 340
He's consistantly been sitting pretty low for a while now. Currently, in North America he has a 46.75% winrate, which is overall the 17th lowest winrate of all champions in a game of 121 champions.
At the time of this post he has a:
34.67% winrate in Challenger 42.62% winrate in Diamond 44.33% winrate in Platinum 45.59% winrate in Gold 48.70% winrate in Silver 49.08% winrate in Bronze
SOURCE: http://www.lolking.net/champions/yasuo®ion=all&map=sr&queue=1x1&league=ranked#statistics
I know that winrate is not an end-all indicator of champion balance, but I do think that the numbers are interesting. I always here people say "oh, well he's completely OP in the hands of people who know what they're doing!" yet the winrate actually goes down the higher you go in divisions. I mean, I'd like to think Challenger players "know that they're doing" more than any of the payers from the other divisions.
Maybe I'm jumping to conclusions here, but I can't help but to think that the majority of people who whine about Yasuo are lower in the elo spectrum. But this is just a theory, as I am no means a pro at this game.
But yeah, anyways, take a guess. Who knows, the winrate could shoot up since it'll probably only me diehard Yasuo mains playing the champ after these nerfs.