What the !@#$ does belief have to do with anything? Who gives a sh-- what I believe? What I believe is completely irrelevant to the reality on the ground...and from what evidence I've seen, anecdotal and otherwise, that indicates there's multiple parties in Iraq pursuing multiple goals, including ex-Baathists and foreign fighters that may or may not cooperate with each other depending on the situation, regardless of what anyone not in Iraq believes.
That's a FAR cry from making a woefully ignorant blanket assumption that, because more Iraqis are in hospital than foreigners, more Iraqis than foreigners are fighting.