Honestly, who cares if Yasuo is balanced. He needs changing.
League of Legends is a game. First and foremost, games should be fun for all participants. And the truth is, Yasuo isn't fun to fight, winning or losing. I'd rather lose a game where it feels like I had lots of control and simply lost on the merit of being less experienced, than win a game whilst constantly jumping through 3 flaming hoops with my spine contorted backwards at a 110 degree angle.