I would win in a fight with any of them.

In a loser contest, maybe.

You want to knooooow people, you want to knooow, Megaman would win, first of all, Megaman is a robot, Samus Aran is a regular soldier in a ballistic robotic protection suit, Second of all, Megaman can collect numerous infinite weapons to figure out how to deploy against weaknesses, Samus only is only a special operations combat tactician and martial artist and her protection suit is only patented with and can use so many weapons to her disposal, and third of all, Samus was created by originally an extra terrestrial clan of guerrilla warrior cheap asses, Megaman was created by an military aerospace secret special weapons scientist, THANK YOU VERY MUCH(APPLAUDE), THANK YOU VERY MUCH(APPLAUDE)

GOOD FIGHT AND GOODNIGHT!