If Jesus was not historical, then the Jesus Game is meaningless. It would be like arguing over Paul Bunyon's true ax-wielding prowess. Could he really split a 36" log with a single swipe, as is recorded in some accounts? Or did it take him three chops, as sworn to in other accounts?
No, we can't argue over the nature of a mythical being, not with a straight face.
So Jesus must have existed as an historical person.
Yes, and since the gospels can't be relied on for anything we must decide what really and truly happened because Jesus was a poor peasant Jewish teacher made into a God, a hero fighting for the little guy, he just has to be real, you just can't make that stuff up. With the proper education we can see that he was real and truly existed, must read more Christian scholarship.