Whose Right About Fight?

This week's Objet d'eBay celebrates a violent man -- actually a piece of metal from the cage where the violent man once fought. Mixed martial artist Jon "Bones" Jones can be worshipped by buying the piece of metal in this Topps card. An unlikely relic and unusual man, whose father (according to Fight):

"... a pastor at a Pentecostal church in Jones’s hometown of Endicott, New York, told him that he didn’t have the “killer instinct” it took to be a fighter.


“He thought I was too chilled out,” Jones says. “He didn’t think I was mean enough. But I don’t think you have to be mean to be a fighter.”

The son's a fighter; the father's a preacher. Which one is right about fighting?