If you notice he is saying that if you believe Jesus to be 100% human and not God at all, along with the other prophets of the Bible, then this makes you a Muslim. In other words he is suggesting is that by not recognizing Jesus as the messiah and accepting God as being the only God, then that in itself makes you a muslim, and that Judiasm is the same as Islam. I believe this is a tactic to turn Jews against Christians. The muslims have also appealed to Christians in the same manner by telling Christians that the Jews hate you because you believe Jesus to be the messiah, just like they hate muslims for believing in Mohammads' teachings, thus turning Christians against Jews.