Samus is way more powerful than Fox, it's laughable this is even a competition =/
Samus destroys WORLDS, she's super fast, super strong, fires lasers like a mofo, she can morph, defy gravity, she can use her grapple beam to hinder Fox's movement by a longshot, fire and ice missiles, huge destructive capabilities, unlimited firepower, different suits for different occasions, the ability to scan her opponents weaknesses, use different visors to locate them even if they were to turn invisible. Fox could come at her with an airwing AND SUPPORT and Samus would still probably win. She makes Ike look bad, and Ike killed a god. Fox simply can't compare, in any one of his vehicles he has yet to match the firepower of Samus, and yet she is still dozens of times more adaptable and mobile.
+1 Samus.