[stuartcr]

Does that mean that in wars, the side that wins has the superior religion? How does that work when the warring factors are of the same religion?

[Reeses]

Having a superior religion provides an edge increasing the probability of survival. Atheists are at a disadvantage and tend to get killed off. However it is just one factor. There is little evidence Neanderthals were religious while Cro-Magnons were.

[Reeses]

If both tribes have the same quality of religion then it is not a factor in who wins. This situation is very rare though.