I don't know for a fact, but isn't it completely possible for a tank to out dps melee dps simply because melee dps need to move around so much more? If a tank can sit on his ass and execute his rotation without interruption, while melee dps hase to constantly break chains, then its not impossible for tank to do more dps than melee dps.

some damage > no damage at all from dodging.

Again, dont konw if this was the case. just playing devils advocate.