The only good Christian is a Gnostic Christian. True or false?

A nutshell view of Gnostic Christianity is expressed in the first two links. The third shows the attitude and result of Christian and Gnostic Christian interaction. I should point out that Gnostic Christianity does not hold to any supernatural belief, although I know that the literature, mostly written by those who won the God wars, wants to show that we do. Our myths have a lot of supernatural entities but they are myths, not reality.

I heard the saying in the title of this O. P. some time ago and after looking at the moral aspects of both ideologies/ theologies; --- I think that statement to be true from a moral point of view.

Do you?