First: Dummy it's for practice, we all know that. Parsers on dummy are made for maximize DMG, more important, practice the best rotation over and over with the new gear while improving with your class.

Second: Dummy are not a real boss, yeah it is pretty obvious, right? Then why are still people claiming; OH SHIT; MCH/BRD SUCKS BECAUSE THIIIIINGGGGS!!! DAMMIT YOSHIP! Hey wait a minute, actually MCH are parsing over 900 DPS on Alexander fights, fuck off!!! This must be a cheater!!!! (i.e: https://www.youtube.com/watch?v=ch7NxSGZmeM)

Nope, it's not. Ok there is Battle Litany, piercing and other super buffs, but honestly, you know why his damage is so damned good in all the fight? Because it's a real fight. Real fights have disconects, mobs, and more mechanicals. What does that mean? Any DRG/MNK/NIN will not keep all his super stuff up forever. Yeah, that's how it works, really. Unless you don't play raids, ofc.