MM
That's hard to answer as some sets have a power that tops dps charts like ignite for corrupters but the rest of that set it weak. Then there are powers like flare who is also top of DPS charts but most fire skip that for heavier hitters unless they dom.
But over all, looking at the all the powers in the attack chains Mids powerset comparison rates highest DPS to Banes.
Only problem is the MM rating is not accurate as doesn't show pets.. could figure out pets damage then modify that by thier lvl penalty nad # of.. to compare but that would greatly change per lvl (more so then other sets) and take too long for me 
I will say MMs are meant to be most powerful and complicated AT in the game from what I understand, so could be. But I think they might be #2...could be wrong but seems to me MMs achieve their superiority by being 2nd best at everything.. they are 2nd best corrs..tanks(can't say brute, I think bruting diff then tanking. But they fill role of brute when is none by tanking.. ie keeping the aggro off the party.)
2nd best doms and one can be said to be 2nd best stalkers (ninja). However my MMs have encountered many AV/Heroes that without insps or temps they could not overcome the regen where my other ATs don't have that problem. Hard to figure how much damage you are capable of when tier one is -5 to 6 lvls what your fighting, tier 2 is -4 to 5, I mean I know there is some math formula to figure dps based on odds of hitting etc... just not smart enough to know what it is
Ok, I am making this a short and sweet one...
What is the highest DPS AT redside (only using SO's)?
I hate all this terrorist business. I used to love the days when you could look at an unattended bag on a train or bus and think to yourself.... I'm going to take that.