Well, if the Jesus of the story is reasoning from the evidence favoring his being the first Jesus, the position is going to take a substantial hit.
As Jesus is supposed to have risen from the dead and be immortal, I still don't think the hit is that strong.
Yvain isn't a big enough self-promoter to link to this, but I liked it a lot and I think you will too.
"The Last Temptation of Christ"