Its not really. The ideology is pretty much the same. Its just that there are alot more of the Muslim extremist groups that are actively working towards that goal than most other religions. And they tend to be oraganized and able enough to carry out larger scale violence and political missions.
The religion is the same, just more people who are more dedicated.
The extremists would probably further their beliefs more with Feed the Children type programs instead of the "cut off their hands so they can't vote" type programs.