i think this theory is largely irrelevant now. part of the reason BM = leveling was down time (b4 viper) or time in viper aspect. now with focus we're never out of damage dealing resource for more than a few seconds.
however, i still think BM will be more faceroll. using the new MD glyph and a tenacity pet specced for tanking and (aoe) aggro should result in a rather trouble free 80-85 experience.
Misdirection with the new glyph and the new Mend Pet will make leveling a joke. Grab your tenacity pet, set him as your focus, Misdirect>Multi>Multi>Misdirect>regenfocus>Misdirect>Multi>Multi - Mend Pet as needed, it's free!