I'm willing to accept the fact that maybe part of why I was better at MW3 was some sort of lag comp, although part of me believes it's just the fact that I usually had scavenger bonus and was running around like a madman without aiming. But you guys could well be right.
One thing I won't blame on the lag comp is the fact that I could flat out hit things better on MW3. Stationary target across the map on gulch? I could pick him off easily with the G36/RDS/silencer. I'm not complaining - just stating that I find it much more difficult.
I have found a gun I like, and I've also been using a hybrid of the running, knifing dickhead class that Conman hates which I actually find fun. Bottom line is it's all about fun. Do I suck more at this game? Yeah. Will I keep whining? Probably. But I'm still having fun.