Gotcha, well the perks are what separates regular weapons from perfectly rolled (God roll) weapons. The whole point of calling it a God roll is to say that the perks couldn't be any better. I won't deny that your LMGs are good weapons, but you're basically just saying that those weapons have great default base stats. There are others with those same weapons that have better rolls that will give them an edge over what you're using. Take my Against All Odds for example. It's a great gun in general, but not many people have counterbalance, perfect balance, and feeding frenzy. It literally had no kick and was fast to reload after each kill. If I had something like grenadier, I might have been killed more often while trying to reload. Every little thing helps. Without my balance perks, I'm sure I would've landed less precision shots.