It does when you aren't nerfing BRD to a point people wouldn't take it. In fact, BLM is a perfect example of this. Its damage is monstrous, and it's essentially considered equal to SMN yet its popularity didn't move much this tier. Why? It's never been a popular job at any stage due to its gameplay. MCH falls in the same category. A 5% nerf to BRD tomorrow isn't going to put much of a dent in any statistic because a huge issue with MCH is its gameplay. I don't disagree with BRD getting brought down a little—never have this entire time—just with the notion MCH's popularity will suddenly jump start over it when at no point in two expansions has MCH ever been popular.
You just said lots of people dislike SMN yet its currently fourth place amongst the DPS because of meta. Why didn't this apply to MCH? During Deltascape it was widely better than all the Casters yet still the least played job. Once again, my point hasn't been damage related but this idea MCH will suddenly become popular when it's never occurred before.
I never said BRD couldn't be nerfed. Don't put words in my mouth. I said, for the third time, it won't abruptly make MCH popular with its current gameplay. I only tagged into this discussion on that premise. Regardless, the issue with BRD is how it scales, which will not be touched until 5.0. Hence why I said earlier they aren't going to just slap a 5% nerf on BRD for six months then readjust everything all over again six months later.
You've moved the goal post again.
I said if you apply this hypothetical 5% you suggested, BRD is a dead weight job without a DRG. Their rDPS wouldn't make up the enormous loss overall. This isn't the case currently, though why you would run without a DRG on either physical range is anyone's guess. Regardless it's also likely why we won't see any significant changes because I have ever belief Piercing dies come 5.0 and that is how they'll settle MCH/BRD. MCH will be better compensated whereas BRD won't. But this won't happen mid tier.