DRK: Which is more viable for MT/OT?

[Syzygian]

Warrior is better OT/MT, Paladin is better MT depending on what your fighting.

Darks are kind of in a weird place because they don't do the DPS of a Warrior and their DPS is closer to Paladin which has much higher sustain. Clemency is sick now.

I can't recall, so refresh my memory - on what in-game experience/evidence are you basing this?