I don't think the main problem about tank DPS is their now non existant disparity. Simply they are balanced around a number of skills either offensive and defensive. And while the DRK and WAR seems to have more offensive related skills and cooldowns, and a more complex DPS rotation, their DPS is quite the same if played like it should. But the PLD shine in DPS when the fight get complex phases and movements, while the warrior will be disrupted in his mandatory combo by theses.
Well it could have been a no issue, if the tankyness and utillity was Equal even if the PLD got more skills to account for this part. But it's not. The War gauge account for his DPS and his tankyness and he stands not better than the two others in any of the role by spending it. The DRK lacks cooldowns, but hell TBN is still great to use.
It's like they pooled the whole offensive kit of every tank to make them, despite complexity and number of skills, equals. But they didn't work the defensive and support aspect the same way : Hence the problem.
