For purest high numbers I'd suggest Arcane. Though, I must warn you, DPSing isn't only about being the highest number on the chart. If that is all you are focusing on, then you're doing it wrong. I highly suggest checking out the mage class forums, the stickies there will answer any and all questions about mages you may have.
Though, I could be wrong on this, but the human racial is a PVP-trinket equivalent, not a PVE trinket. Unless they've changed it when I wasn't looking, of course. Either way, yeah, check out the class forums if you wanna play a good mage. :)