Ummm, professing how Faith has made them change for the better is a Cornerstone of getting parolled, so don't bother believing That,

Atheists don't get religious exemptions, like time off to attend services and counseling, it's also away to curry favor.

I have to say though that I have read those sort of stats before, and they may always be skewed. Since prisoners come under a lot of pressure to sign up to religion, both from the parole system, and also from just plain boredom. Plus atheists generally come from higher earning and higher education groups, who are less likely to be pushed into crime. While I think that atheist are likely to be generally more honest, the figures for at least those who go into prison, probably are not quite as extreme as that.