Just let you all know DRG can do 350 DPS on dummy with 5 min result. If you want to claim king of single DPS.
You need be top1 for burst, short and long term fight. Obviously MNK isn't. Go give a Try to beat full i90 gear DRG in Gardua HM. you can do it few time easily and parser the result if don't believe DRG DPS is very close to MNK.somehow Good DRG is hard to see.