What is your gear, Judge Xero? On pretty perfect runs on my BLM with LB3 on adds I usually get around 420 DPS. I have played with good Summoners as well and excuse me for doubting, but near 500 DPS on T10 as a Summoner without mana support. I'm going to put this bluntly. Provide concrete proof, or most people will think you're full of shit.