It will be a war to the death between the two Nazi religions, and I think the Euros are the ore ruthless of the two.
And smarter. People raised in Islamic environments generally don't have the science and tech skills to compete with the west.
Also, from what i've read, it was Islamics that inspired Hitler to initiate the "Final Solution." His Muslim allies were urging him to do it, and it is from them that he apparently got the idea.