I don’t know any highly educated Christian of my generation (millennial) who is deeply religious. Even if they tell everyone that they are religious they rarely go to Church or even pray at home, and their Bible is somewhere in a box in the attic. They don’t even indoctrinate their kids with their religion. Chances are high that their kids will be atheist or agnostic. They will run the world.

Christianity is slowly dying out in the developed world at least in the parts with a good education system and where most people trust the sciences. I bet the same will happen to Islam in the west. Once the third gen muslim migrants are all dead the generations afterwards will slowly turn non-religious. End of the century the descendants of Muslims who are in the West for generations and middle class and educated will be atheist or non practicing Muslims.