Master Chief can beat him with and without his armor. He doesn’t need guns because he is literally faster, stronger, and more built than Batman. The Chief can literally beat the hell out of a Silverback gorilla (which are basically Brutes which are gorillas on steroids). read more
Master Chief couldn't beat his genitals with his right hand, because he is just that stupid. Batman wins in hand to hand combat, without his suit or utility belt, sitting in a chair." Read the books. read more