Sure, 90% of Muslims are good and decent people, but about 10% of them identify with the Jihadists. Thats some 1 million people. The fact is, I can't think of another religion with that number of up and coming crazed lunatics. Check your math. 10% of 1,200,000,000 is 120,000,000.
If the 120,000,000 are "Crazed Blood Thirsty Maniacs" then they're pretty unmotivated Crazed Blood Thirsty Maniacs.