The difference between Islam and other religions is that there are some very core theological tenets in Islam that contribute to their ability to be radicalized. It is much harder to radicalize a Buddhist, Christian or Jew using theological arguments, than it is to radicalize a Muslim (not saying impossible - just saying much harder). Further, Islam as a religion was intentionally developed by a military leader seeking to over throw opposition in a particular place and time, tailored for a tribal culture with millennia experience of solving problems with violence. Islam was not a radical concept to the arab world, it was easily assimilated because it fit so well to their culture ... as if it were made for them. The same cannot be said for Christianity which is so anti-culture, or Buddhism, and really for Judaism at the time it was received. No Islam isn't just another benign cosmology that someone came along later and exploited - it was fashioned as a weapon by design, and has been used by a number of eagerly violent people.