Well, GZ Method. But if we take the whole raid into account it's really hard to say who is the best performer overall.
Yes, Method killed Queen Azshara first, but Limit got to last phase pre nerf. Method wasn't even close at getting into last phase pre nerf.
Limit killed Za'qul 26h prior to Method, thats big plus in points if you ask me.
All in all I think the end result is pretty much tie between Method and Limit if you ask me. Now let's cheer up the Limit to finish this boss!