I find it's not the aiming, but the lag that frustrates me. Then the other guy thought he was something special so he runs around teabagging everyone. I just don't play online much anymore. Pretty much only Gears of War at this point. And that's because I still love it when dummies run around corners without looking, like they haven't learned anything in eleven years of playing the game, then cut cut cut!
Oh the lag is even worse. I am not sure why when I fps cap a game to 60fps the game still has frame latency issues for apparently no reason.
Uh, I'm pretty sure you're supposed to play with uncapped fps if you're playing competitive online fps. ---