Although I'm pretty sure no one takes this talent, I'll probably have to preface that statement with an "almost" just to be safe. Kil'jaeden's Cunning (KJC) is the "default" level 90 talent because Mannoroth's Fury (MF) is seriously situational and because Archimonde's Vengeance just plain sucks.
PvPers might have used it in the beginning of the expansion, but most PvErs don't give it a second look. The passive damage often doesn't actually work because unavoidable encounter damage can be termed "environmental" -- the same reason why your pets don't die while standing in green goop that otherwise kills you. The active damage just doesn't hit that hard.
Archimonde's Vengeance (AV) needs to be better if it's going to live in the same tier as KJC and MF.