No, not because it may or may not be the best at least. It is likely i'm going to pick it because I like the aesthetics of the Kyrian and their zone most over the other 3. In beta I have dabbled with Venthyr during Thorghast testing and that's still ok but then i'd prefer the Night Fae a bit more. Of all 4 I like the Necrolords least as it reminds me of plaguelands and most of northrend which i've never liked for it's aesthetics.
Putting aesthetics aside, in my opinion the mechanics and questlines around Revendreth and Maldraxxus make them the most interesting. So who knows what i'll pick in the end.
So there you have it, I don't care about that few % extra DPS if I have to play something which goes against my personal preferences. Having fun for me is not tied to being the best and having fun is the only reason I play a game.