I'm confused as to how Khan wins. Galahad aside from his hands and hands is bulletproof due to his suit. He's also got the umbrella which launches shock rounds, a magnetized, electrified bola, actual bullets including shotgun spread, and stun rounds. It's also bulletproof as well.
Beyond that, Galahad has superhuman strength and durability as evidenced by the church scene. And he's a crap ton faster than Khan as well as just being a far better fighter.