well certain guns do much higher damage.
The reason why people used the Ak 74u in Black ops so much because it was as powerful as an assault rifle and with rapid fire and grip it was deadly.
I find MW3 multi player way harder then Black Ops.
In Black Ops it was much easier for a noob. I had Ghost Pro, War Lord Pro and Second Chance Pro and used Claymores like a cheap bastard. Oh it was so easy in comparison...







