>>212979741They don't kill the unarmed because it isn't a fight if your pray can't fight back, The jungle hunter actively engaged in a fist fight because Dutch initiated it. And the female thing is just old hunter lore about not killing the females of a species because that means no babies which leads to less or even no hunts in the future. Adult male animals are considered expendable because they fight each other for dominance anyway so there's always a younger male to take the place of the one who loses breeding rights.
Earth is a game planet, the only honor Preds have is treating Earth like a safari instead of a warzone.