For the Noahide the question of Jesus as a historical figure is a non-issue. The only question the prospective Noahide must come to terms with is: "Was Jesus God?" To this all Noahides and Jews can answer without reservation, "No!!" A man, historical or not, can not be God if nothing more than by definition. God is beyond human conception. Therefore, if men saw him, took any type of human form, or demonstrated any human attribute he would have to be a "creation" of God and not God Himself.
Noahides and Jews hold to the strictest principles of Monotheism, One God, indivisible, beyond comprehension, and in need of nothing.