Because the Biblical Jesus did not have long hair or looked like a woman
I Cor. 11:14 "Doth not even nature itself teach you, that, if a man have long hair, it is a shame unto him?"
If Jesus had long hair than he would be a hyppocrite and a liar
Women in those days had hair down to their butts, men didn't.
Believe me Jim Caviziel is one of the most religious men around. He took that role very seriously.