I'm not sure that this conclusion is warranted. This post did not cause me to think you were a christian, in fact I really can't imagine a christian putting that argument together in that way. Additionally, the argument clearly applies equally to Islam and Judaism, and you state as much while making it.

As for me: I initially voted the post up, thinking it was rated too low, but after further thought removed my upvote; I really don't think this is a big departure from more normal statements of the wager.