I don't recall us doing any kind of debilitating damage to either of them in Cataclysm - at the end of Vash, they even scoot off with the Tidehunter. N'zoth's influence is in pretty much everything at the end of the expansion - he's turning people left and right, he's spawning maws in the Dragonblight (Yogg's old stomping grounds!) and sending out the Faceless - I think that's a HUGE point, that an Old God is stepping in on another's territory either with his own troops or co-opting Yogg's old forces. And we didn't do anything to him - we don't even know where he is (presumably close to Vash ergo tentacley-stuff, but who knows?). N'Zoth wasn't powering up
So even assuming we DID deal some kind of devastating blow, it's months til' Pandaria, and even longer there when we wrap up Y'shaarj/Garrosh. And no word of them, no sound out of their forces. Same deal with WoD - we literally send the best and brightest off through the Dark Portal and they don't make a move?
Am I missing something here?