Sad but true. Winning can often make you unpopular, especially if you're any good. Its been awhile since I've devoted enough attention to be "really" good at any game, but I was fairly competent at 2K5(I probably lost 1 for every 20 games I won) and I got blamed for everything from random lag, allowing the computer to run the ball for me, not running different defenses despite the fact that my "same" defense is designed to stop their 2 play offense. I even get negative feedback now playing SF4 for being "disruptive" and I don't even own a mic.
Anyway, its a great idea in theory, but it will never work. People in general are just flat out *******s, and the anonymity of the internet does nothing but enhance that.