Correction - nerfs are not [i]always[/i] the answer. Imagine the weapon pool as a race between cars. If you enter the race with a car that has a faulty engine (i.e. a sub-par weapon) and come dead last, you don't begrudge the other racers for having functioning cars, do you? You try to get your car fixed (buffed) so that it can compete. On the other hand, if you and others enter the race with a normal car but one person fits a supercharger to their engine - causing them to win the race by a mile - you'd ask that their car be brought in line with the rest (nerfed) so that there isn't such an imbalance. The weapon "balance" as things stand are more like the second example. It's not that a few weapons are doing acceptably well and everything else is bad, it's that most weapons are good but a few make PvP largely trivial if the opponent isn't using the same thing.