Let's put it this way, I play a similarly geared MNK and BLM, so we can hold player skill constant. My MNK BLOWS my BLM out of the water on every single target fight, assuming there is no throttling. In T7 they are about the same because of the throttling, in T8 my MNK just absolutely decimates my BLM. In T9, BLM will win in P1 and Golems, and MNK will win post golems.

mDPS is harder to use up close for extended periods of time because holding all other factors constant they can blow ranged dps out of the water.