That's strange, because on the Iraqi blogs they say that they are mostly Shiia (same as the Iranians). When they talk about the Sunnis they are only 20% of the population, the Kurds are 20% and the Shiia south is 60%. Perhaps they are wrong, but I figured since they have lived their entire life there, they would know. I do know that Saddam transferred a lot of Arabs up there to take over most of the north and displace the Kurds. They are an entirely different people, so perhaps they are mixed.