for the shot sync id say 1.0.1 > dp2 > dp1 > 1.0
if you don't kill your opponents it should be lack of skill i guess. also from what i've heard and sometimes noticed, a high ping and low fps can do a pretty good job saving you and killing all the others when used correctly, due to the victim deciding if a bullet hit or not. in my opinion it would make much more sense to let the attacker decide like it currently is in most other games, however it does a pretty good job in 1.0.1 again.