Well, in T5 it´s really hard to say. Overall, i would suggest SMN - because DoT´s obviously do Damage while the Caster is Moving, also Melees are able to dodge and Damage as well, so our Monk also does good DPS.

On our Yesterday´s clearling, I was top with 271 DPS, while the 2nd Blackmage was about 220...

While i made some short Damage Stops to have Mana Full when Knights or Conflag came, and still got the Topspot... while the equally equiped BLM got caught in Conflog and Knight often, so... in my opinion, pure numbers don´t say all about the fight performance...