I wouldn't judge this on its face value. There are people who realize they need help, e.g. anger management, been abused etc, and they probably turn to Christianity because there is no one else to turn to.
The article mentioned some interesting data points, but it doesn't do anything more than that. Correlation does not imply causation, and all that. For example, what is their definition of 'religious'? What other demographic differences could explain this?
I'm not saying that the conclusion is necessarily wrong, but I think that a bit more scientific rigor would be useful.
