Also.. you're all forgetting that while dual wielding about 95% of all abilities are scaled back to proc only 50% as often, so you'll still see the same number of Blood worms, and Scent of Blood won't proc after every swing like it does while 2 Handed. Dual Wielding is not optimal in anyway and can not be argued for at all.
(The throttling back of procs goes out to all classes as well, no only DKs, although it rarely matters now, those mechanics in the game are still in place)