On paper DRG would seem better than NIN, given how the potencies are layed out. I mean Full Thrust is huge, we have Jump (250), SSD(200) DFD(300), Geirskogul (220), Nastrond (330), and Mirage Dive x2 (200) oGCDs. We have so much oGCD damage, not to mention BoTD which buffs Jump damage by 30%. Though maybe NIN comes out ahead from auto-attacks from skillspeed/Huton, and full time +20% damage from Dripping Blades II.