I think the guns stats on most weapons are way off. I had two assault rifles one was 40 dmg fully automatic and the other was 320 dmg with burst fire and both had a fire rate of 15.0. This seems off to me. However I did notice that the assault rifle with 40 dmg and fully automatic strangly seemed to fire more than one bullet at a time, (No it wasn't a shotgun) but if that is true then shouldn't the damge be 40x5.

I've also noticed that all BMG's that I have picked the last two stats are always 0. I'm not even sure what they stand for.

Anyway as stated above, test out guns and find what seems to work best and stick with that model. I'm only at level 400 something now but so far there doesn't seem to be any difference in the guns based on the ego rating (the number nexted to the guns emblem).