I don't know. I spent a lot of time with Sunni families in Iraq as my hide sites many times were in homes, and I can tell you that the vast majority wanted nothing more than to kill as many Americans as possible. I had the opportunity of attending an intensive Arabic course in the USMC, and while I certainly wasn't fluent, I could understand it well. My opinion is that Sunni Muslims don't value life as much as they value death. The most extreme example I have is a young boy tell his dad that he couldn't wait to grow up and kill Americans.
On the flip side of that token are the Shia. They were very respectful, very nice individuals. I think it really varies depending on the type of Islam the person Practices. the Same could be said for Christianity. Phelps' clan certainly doesnt represent all Christians, but they still practice Christianity.