It should be noted that historically, Islam has gone through several deep changes. The last(as in most recent) one was a reaction against what had been a more or less rationalist, liberal interpretation of the faith. The Islamic Golden Years were largely tossed aside in the homeland of the faith, though you can still see shades of what it used to be in places like Bosnia, Jordan, Albania, Turkey.
You might say that's an example of "Western Islam". Geographically, you're right, they are indeed west of the heartlands of Islam. But culturally "western values" traveled west through these places and were adopted because of the cultural exchanges through the centuries. The Byzantines/Eastern Romans certainly had no desire to share the works of ancient Greece with the world, they were only opened up and spread after the Osmans took it from them.
Don't think I'm going soft on Islam, though. If anything, this makes me far, far more angry than if it were simply they'd been terrible from the start.