lol also its not even a superior feats if it did happen, killing a person who's already got beaten by the others is a bitch move, only reserved to villains who have bitch ass personality, characters like BB or Orochi, those guys will surely only enter a battle of 2 and kill their target who was already nerf fighting his first opponent, then claim victory like they the one who fought him at the very start.
you know a fictional character really have bully followers if they really want their idol to do shit like this