Indeed, you raise an terrific point.
If the game was to be a 1 vs 1 style pvp, then classes should be balanced, all classes no exceptions.
But this is obviously not the case. Warzones are a Team Effort, a concept most people it seems have a hard time wrapping their heads around. If one person in the "TEAM" is weak, then they will be the one defeating the team from within.
That does not call for a nerf of any class.
People begging for nerfs clearly want a "Death Knight" class in SWTOR as it was first introduced into WoW. Unstoppable, Over-Powered, and flat out fail.
People simply want their class to kill off raid bosses solo, something that will completely ruin the game and kill off any interest in other classes.
As a post made above, its simple, you suck at that class? try a new one. You suck at all classes? then the game is not the problem. Much more likely, you suck! Figuratively speaking of course.