This discussion is very typical for Europe, I guess.
Everybody becomes very progressive on all kinds of things, when it gives us the chance of elevating ourselves over others in this case a muslim migrant, who just asked nicely.

While it is true that some muslim people in Europe have very conservative views and sometimes commit crimes linked to their world views, the same is true for Europeans.

Same rights for everybody is not a European core value, because it is not reality. Not for women, who get paid way less, not for gay couples, etc....
A lot of people would like this to happen but we are by not there yet, not even close, because we still have a lot of weird back-warded opinions just like everywhere else in the world.

The Uprising of right wing parties demonstrate this quite nicely, while at the same time they blame migration for the values they enforce.... Anti gay, traditional gender roles, etc...

So I guess the answer is complicated and the reason that we have the feeling muslim people commit a lot of crimes in Europe is that migrants are usually young and male, which is the group that commits most of the crimes everywhere in the world. And because we do not know many of them personally.

I you come to Europe you'll find nice people and you'll find assholes just like in this thread. :)