Christians, do you deny that this has anything to do with Jesus?

Hmm, the accounts you mention are considered fiction by almost all, the accounts of Jesus life are not considered fiction, but biographical accounts of Jesus life. Just as we accept most historical accounts of people who have lived when historians right about the person, we find no reason not to accept the accounts of Jesus life. Second historians other than the Bible writers both Jewish and Roman confirm Jesus existence. And third fictional characters do not change history or mankind, no one man other than Jesus has had a a greater effect on mankind's history.