I never claimed master chief would win, jeez. I was just pointing out that it wasn't as one sided as you were making it out to be. Now then, have you ever looked up what Spartans have to go through to become Spartans? Genetic modification, drug serums, titanium skeletons, etc. Then they have a thousand pound suit on them and they can still jump high enough to land on a basketball hoop. Master chief survived falling from orbit in his suit, he's pretty tough. Now in a gunfight, yes deadpool would probably win if they both had the same weapons. If it was down to the weapons they use in there respective universes chief would win because he has promethean guns that literally digitize they target. Deadpool would become part of cyber space, not dead but not alive in the flesh. Plus chief has other armor abilities and equipment that would help him too, such as drop shields and active camouflage

Master chief can't take as much bullets as dead pool, master chief does not have strength of captain America, unless you have evidence they are equal, if it was an all out gunfight dead pool would win