look man i couldn't tell you the difference between your garden variety chinese/hmong/loatian/burmese/japanese anymore than i could tell you the diference between a dane and a swede (actually the dane talks like a dumbass).
Just to clarify, I have every Strapping Young Lad and Devin Townsend album. I also have Vai's Sex and Religion (which he does vocals on), and enjoy all of them a great deal. I would agree to an extant that the bands I mentioned are narrow in that they are primitive and simplistic, but I must wholeheartedly disagree about those bands sucking.