The no evidence charge revisited

Loftus asks if there is any evidence for Christianity. Of course, he's not the only one, lots of people say that about religious beliefs, not that there is poor evidence, or that the evidence is outweighed, but that there is no evidence. 

Wouldn't it be an idea to come up with a concept of what we mean by evidence before we ask whether we have any? X is evidence for Y just in case Z? 

To me, X is evidence for Y just in case X is more likely to exist if Y than if not-Y. But now, if we go with that definition, then the existence of reports that Jesus was resurrected from the dead is unlikely given the claim that Christianity is false. After all, most people do not have people claiming they were resurrected after they died. (Not even Elvis Presley, though there are people who claim he never actually died). But we should expect it to be reported if Christianity is true, so, in and of itself, the existence of resurrection claims on behalf of Jesus are evidence that Christianity is true. Plug it into Bayes' theorem and it ups the probability. 

Now, you might say that that's crummy evidence, and in and of itself it surely wouldn't persuade much of anyone. But if you want to deny that it is evidence at all, you need to supplant my definition with one of your own. 

I am willing to embrace the logical consequence that the testimony to the Golden Plates is evidence for Mormonism. But my view would be that the weight of the evidence is against Mormonism, not that there is absolutely no evidence at all for it. I've, for a long time, been asking for a definition of evidence that allows us to draw the conclusion that there is no evidence for Christianity, a claim I would NOT make even about such patently false claims as Mormonism, or even Scientology.