The creator of that guide dismiss's BQS out of hand without an explanation. Either he is blind, uninformed or just plain stupid. I've tested it against Falric's and Rimfangs and it blows them out of the water in every way. I am currently testing it against Bonebeakers, and while i've just begun its a noticeable difference in my overall damage taken through heroics. I'd take anything he says with a rather large grain of salt.