So you are not playing with brave enough people. I have seen mage doing 3M+ dps on big pull (all mobs before 1st boss on Maw of Souls on M+4 i think).
My armory for reference: http://eu.battle.net/wow/en/characte...angurde/simple
Anyway this discussion is not about dps, but about mechanic of the spec. MM for sure can do loads of dps, but it cant res a tank (dont tell me you can spec out of Lonely Wolf).
MM cant also stun a single target mob for 5 sec. It cant BL.