Bruh, "far and away the best DPS"? It's a literal 2% difference over GNB looking at averages and if you look to the top the gap closes with the best most thirsty DRKs putting out 1% more damage than the best GNBs. Dark Mind is good because you take less damage from raidwides, even when the healers are going to have to push out the same amount of raid healing since the other 7 members of the group didn't have Dark Mind? Fresh take. Also, TBN is not a DPS gain. If it pops, it is simply not a DPS loss.