There is no "what if" about it. Jesus can easily be called an anti-christ. He failed to fulfill the messianic prophicies, so he was not a messiah (christ and messiah are interchangable, christ being a grecko roman translation of messiah). Right of the bat, we know he's a false christ. When you factor in the fact that Dt. tells us that any one claiming to be a prophet that speaks against torah is surely a false prophit as jesus did, it reinforces the false christ conclusion. Then when you consider that jesus was in fact the opposite (or anti version) of what the messiah was sopposed to be, it's perfectly reasonable to call jesus an anti-christ. For example the messiah is to usher in a 1000 years of peace on earth, but jesus promised he did not come to bring peace but a sword. He never braught any peice in his lifetime, and his followers are in fact, the most blood soaked religion ever practiced, quite the opposite of what the messiah's to be. Jesus was an anti-christ.