You might want to check out muslims killing muslim to get it into perspective, but some how I doubt you're interested in actually doing that work.
Here's a start;
“some 11,000,000 Muslims have been violently killed since 1948, of which 35,000, or 0.3 percent, died during the sixty years of fighting Israel, or just 1 out of every 315 Muslim fatalities. In contrast, over 90 percent of the 11 million who perished were killed by fellow Muslims.”
By Gunnar Heinsohn and Daniel Pipes, FrontPageMagazine, October 8, 2007