Believers say one needs the belief in God to be good?

From what I can observe, believers and non believers behave exactly the same. There are slight differences: a notice a pinch more of bigotry and pride in believers, but morally speaking that wouldn't be condemnable if it wasn't for the Bible. I also don't see the scientific community --7% believers-- running amok, killing, raping and cheating on their spouses. Pascal Boyer suggests that religion hasn't been proved to alter one's morality in any ways. Religion only makes some moral precepts more intelligible and easier to understand.