Oh, World Net Daily, it's bound to be true!
In answer to the OP I think that there are far far more people who are functionally atheist than are functionally believers. People who spend almost every second of their lives acting as though there are no gods.
When you cross the road you look first. Thinking that you don't have to because god will protect you is idiocy unless you're also suicidal. Praying that you don't get hit is ludicrous. So most people act exactly like there is no god while they cross the road.