Can Jesus make you more money?

This site bumvertising is about panhandlers earning money by adding advertising to their signs. Notice how all the homemade parts of the signs have Christian symbols (although one included a yin/yang symbol too). Lots of publicity on the guy with the bumvertising idea but I would be interested in the statistics of what is more profitable - a xtian sign versus a "will work for food" sign.

Mother Jones article says that putting Jesus on the cover raises magazine sales as much as 45 percent. "In the past couple of years, magazines such as Wired and Popular Mechanics have tried to cash in on this miracle of marketing, but the most persistent devotees are Time and Newsweek, which have spent the last decade competing over who can squeeze Jesus on the front most often."