Despite the undeniable fact that the physical human brain is the same everywhere for homo sapiens on the planet Earth regardless of race, religion, and culture, there are very strong differences in the intensity and rigidity of religious beliefs and practices from culture to culture.

If you pose the simple question, "Does God exists?" or follow up with "Does God reward the good people by granting them a Paradise in the afterlife (with or without those lovely virgins) and punish the bad people by tormenting them in an eternal Hell?" you'll get statistically significant differences in the answers depending on which countries, and cultures, you're doing the research.

Go among the Muslim peoples of West Africa or even worse, North Africa, and ask, "Does God exist" and they'll stare at you as if you are mad. No sane person would ask such a question. Of course God (Allah) exists, Mohammed was the final prophet, and the Koran is the exact and literal word of God. In their eyes this isn't subject to rational debate - it's a priori knowledge which isn't, and can't, be questioned. People have been put to death for even trying.