Originally Posted by
Vankrys
It isn't hard to imagine that there is a bit of a confirmation bias.
Players looking for performance, looking for the best raiding spec, the kind of players that dig up informations on the internet, follow the developement of their class on beta and PTR, naturally will tend to choose the best performing spec, learn it and play it to a great if not max potential.
Simulation as well as early testing on beta have given the edge to MM, and thus players looking for performance orbited towards that spec. Only players that chose BM are those for who max performance is not the main focus, and either because they despise MM or have a lore preference of hunters with pet. Those players tend to perform lesser IN AVERAGE.
I suspect the gap seen between MM and BM wouldn't be that wide if the spec choice would have been blind, like a pharmaceuticals companies make blind clinical trials for their new drugs. In this case, the most informed, the most performance driven player chose MM, which give MM an even greater edge on the statistics.
In this expansion, if you want to be a cuting edge PVE player, you invest most if not all your AP in one spec. Some thinks it's a major flaw of the artifact system, but nevertheless, that is reality. That would explain why players that have invested so much in their MM artifact, carry them into M+ dungeons.
I would suggest, since the flexible tag of normal/heroic permits it, to make two clear of EN, one with each spec. Compare the feel you have for the gameplay, the ease and pleasure to play the class, compare also the number you get (and not others) with both spec, and then, make a decision.