If anything my experience is the Opposite of this. It suffers from extremely slow bullets and I do not know why when the stats say other wise. Also it take more like 12 to 10 direct hits to kill someone not the 4 your talking about bud. Though I have been playing on craptistic PC severs while your on the DAMN XBOX version that works. Sorry it is just that bad on PC right now.
Lol P2P connections are creating laggy games right now. It is far from perfect on Xbox. However this game is awesome sauce and is a amazing game to me still. They fix the little things this game will be as close to perfect as you're going to come across these days.