I am currently playing BM since I have all legendaries for it ( thanks to 7.2 for that , took me 11 legs to get the shoulders) now I really wanna play mm but I dont have of the required gear(CoF and Boots). Still , on Goroth my MM already outdpses my BM but not by much. As soon as I have those 2 items I will be switching ( 29 eli kills and rolls and not a single cof has dropped so far lol).
Since I also dont have the aoe legs for mm , my bm outdpses my mm on aoe fights by quite a lot ( trueshot on a 2:30 minutes cooldown doesnt help either).