Feng is a bit to hard to measure, since you have to count cloned abilities and aoe on the adds, where a good 2h Bladestorm can give you millions of damage, though there should be logs of warrior tanks using the barrier skill and not aoeing too hard. But going to the best readeable Gara'jal log on a 10H,
Damage Done - 27-12 21:45 - AFK Swimming Pool - World of Logs he got 87k with 30k average dtps. That was heavily abussing execute (up to 17% of his damage done). Removing that part of the log he was getting 67kdps with 25k dtps. There isn't a perfect boss this tier, but taking the big assumption that with the same average damage taken a fight is the same with 1 or 2 tanks, the result seems to be a bit far away. I don't know if the assumption is too big, but the player was more or less nailing his rotation, and was using CDs that should increase the damage against what appear on the sim.
On 25H there is a 115k log, but with a 40k dtps and again abussing execute (up to 20% of his damage). A shame there isn't a perfect boss on this tier, but I think I'm doing something wrong on that sim.