What if the grimtotem rebellion had completely and utterly flopped in Cata

Here's a what if I've been pondering. Magatha's plot in Cataclysm prevented Cairne from defeating Garrosh and putting the breaks on war (whether that's because Cairne would kill Garrosh, or simply shame him and strip leadership from him is up to you).

The Tauren were further unable to do anything since they had a suprise civil war out of nowhere before most even knew of their great chieftain's death, and got kicked further when they were down when the Alliance showed up and started burning down villages and providing the Grimtotem support meaning they had no strength to do anything but protect themselves, much less try to stand up to Garrosh as he became worse and worse.

So let's say that Magatha's assassination plan fails for whatever reason (Garrosh not letting her "anoint" his weapon, Cairne winning flawlessly, the poison didn't kill Cairne and the duel was stopped when both sides realized the deception, etc), and this causes their civil war plans to be botched.

Would this basically just result in Cairne taking power, pulling both sides from the brink since he would not war and Tyrande would ideally be more willing to negotiate with him than Garrosh (who, at this point didn't actually do anything yet, but *was* a prick)