We weren't talking of "who God is"; we were talking of how people behave.
The poster was indicating that a lack of religion would cause bad behavior. If that were the case, you'd think that scientists would be more religious than the U.S. prison population. Despite their widespread atheism, however, very few of them end up behind bars.
Anecdotal evidence only. We have "good" atheists and "bad" atheists, just like we have the same in the religious community.
There are volumes of biblical concepts touched in the "apparently" trite bumper sticker phrase "Christians aren't perfect, just forgiven."