Why are all Christians atheists?

Actually, it's not just as likely. Many polythestic religions accepted the existence of all gods, but worshipped their own pantheon which they regarded as more powerful or more important.I've never bought the argument that Christians (and people of other religions) are atheist to all gods but their own, whereas the atheist just "goes one further" as Dawkins says. Believing in God (any god) is fundamentally different than atheism. The theist, no matter what religion, accepts the supernatural on some level, where the atheist does not. Even people like jar, who are Christians yet almost invariably side with atheists on most issues, accept the supernatural at some level, even if they maintain a high degree of scepticism regarding most claims of the supernatural.

No, I don't, and I never said I did. But acknowledging any god is different than acknowledging no god. Would you say a Christian is more similar to a pagan, believing in Thor et al., or to an atheist, believing in no god?

That's a different question than the one raised in the OP and in the title. I don't see the word 'atheist' anywhere in that question. It's a non sequitur. It has nothing to do with my reply.But besides that, what makes you think they all have the same data? Earlier, you classified these data as evidence (physical, empirical) and magic (spiritual, mental). But this 'magic' is subjective by its very nature. Each individual has his own set of data. We can't know that any two people have ever contacted the same 'God', so why should they reach the same conclusion?And, as jar pointed out, you're grossly mischaracterizing modern Christianity.