Perhaps you're being downvoted because your source does not once refer to immigrants, refugees or migrants. You've presented no evidence which suggests that migrants (a particularly self-selecting group) are a uniform sampling of the population of the countries that they hail from. You've made quite an assumption there. If your polls showed the opinions of Muslims already in Western European countries, then maybe we could start to talk about the ramifications of culture clashes. As it stands now, you're looking for what you want to see: "Muslims are scary!".
I'd venture to say that people, in general, that are willing to move (east to west, or west to east) are probably more inclined to adapt to the place where they are going than the ones that stay in their country of origin.
I'd venture to say that people, in general, that are willing to move (east to west, or west to east) are probably more inclined to adapt to the place where they are going than the ones that stay in their country of origin.