Guessing it's because drks awful tp managment combined with the darkside mp bug with regens that still isn't fixed, these things are holding drk back considerably compared to a warrior, I don't have exp with pld but I think they are doing ok dmg not sure.

The problem is forsure the darkside mp bug, with all the buffs and regens flying around you will constantly be using the low dmg syphon combo to just stay afloat, where as a warrior can just keep slamming away with no mp to worry about and good tp also.

To the people who said " those guys were just being jerks" all 5 different groups? yeh sure... it's called a stigma, and isn't going away until darkside bug is dealt with.