Two scenarios that may/may not happen.

[Little Rik]

The second issue regarding Christ's existence.  I'm less enthusiastic to accept the claim that Jesus never existed. A good number of historians agree that he lived

You're wrong there, a good number of christian theologians disguising themselves as historians agree he existed. Most actual historians steer well clear of the question, mainly because of the flack they'd take by pointing out the fact that there is no historical evidence for his existence.

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There very well might have been a guy named Jesus running around at that time, but that says nothing of the claims of his words,

There were thousands, Yeshua was a very common name in Hebrew circles and Chrestus/Christos was a very common name/title/use name in overlapping Hellenistic circles. Whether any of them were the basis for the Jesus cults of the 2nd, 3rd and 4th centuries which became christianity is another kettle of fish altogether.

Oh, sure.
So this particular Jesus never existed or he never started any thing at all so now we have to find out who spread Christianity all over then?
Even the apostles never existed.
So Christianity must have come from a different planet, isn't it?

Alexander the Great and Genghis Khan instead existed because those who tell us about them are not Christian Theologians.
Gee, i thought I am dealing with grown up people but here I am dealing with kids in the kindergarten.