Anybody CAN'T be good just using those guns. You actually have to be some what knowledgable to go into fights with certain guns. Long range: give me an ACR or a M16 vs a MP7, I'll slaughter them any day. PP90 is very powerful aswell, especially and short to medium range.

You're telling me that L86 Thermal while prone isn't the deadliest gun in the game? It has like almost 0% recoil.

Also, the ACR is possibly the best weapon in the game because its one of the best if not the best at pretty much every category of weapon. It's super accurate, very little recoil, a beast from medium to long range and isn't all that bad at short range for an assault rifle.