Kinda hard not to see the differences in how "progressive" the religions would be from the very start.
Sorry to burst in on your anti-Muslim parade, but Christianity being more progressive/tolerant than Islam is a recent phenomenon. The Arabian empires during the middle ages tolerated Jews and Christians living within them. They weren't equal to Muslims there, but they weren't murdering and harassing Jews left and right like Christian Europe. Arabia was also a center of scholarship and discovery of the times.
Saying they "tolerated" Jews and Christians is like saying black people were "tolerated" in the Jim Crow South.