for me samus beacuse she has a weapon attached to her arm! master cheif can get jacked... samus has more agility and speed she can advoid headshots, her armor is better i mean... a rocket to master cheif is an insta kill! to samus its 1/5th of one of her 26 (or more) energy tanks... oh and back hit to master cheif is an insta kill! lol wat u guys (and girls) think? (oh and im srry if somebody did it b4 and i didnt know...)