The only elaborating I can do is to say I'm level 50 with both bolts and pretty much Level 0 with everything else. I generally score right up there with almost everyone that doesn't get a lot of points from arty. I usually have more kills than the avg smg or semi-auto player. But I did that in RO1, as well. When I get in a tough situation, I just don't get upset and scream "too many smgs!" when I die as I logically should. I can run a HELL of lot faster in RO2 and that negates a lot any imbalance in the open when compared to RO1, imo.