Not to derail this at all, but merely curious, Houndstooth, since you simmed the OP.
I've haven't been using SimCraft that long, but have been recently to sim my dps/weights as well, and I find it odd that he comes out roughly 5k dps ahead of my sims. I am at 488 ilvl, and granted I don't have Dancing Steel on both weapons, but I don't see how missing two weapon enchant makes me miss out of 5k dps esp when I am ahead of his gear by 4-5 ilvls. Am I doing something wrong with my sims maybe not checking off things I should or changing variables?
http://i.imgur.com/g0NU9.png