You need to do your math better.
Yes, they lowered the potency of some attacks, but exchanged that for added damage on EVERYTHING else.
You CAN'T deny that you WILL be doing more damage under the effects of WM or GB than you were before the patch.

Is it enough? Does it make BRD/MCH DPS in line with the other ones? I don't know, most likely not, and it likely never will because you have buffs and stuff.
But it's undeniably more.