why does nintendo hate the miis

in a game where (almost) any character has some dishonest cheat bullshit, they made the miis dishonest in the way that they lie about how shit they are. i just tried using heroes spin on swordfighter as an offstage kill move and missed my shot, so im like its okay i’ll just drift back to stage. how come you cant drift the damn character for the first second after the move ends like all the links. and then why does the shit only go up 3 feet? and then theres that flosspic of a sword he uses too. i dont understand why they can give sora infinite recovery or they give sonic all his nonsense and yet mii swordfighter has to play like he has a brain bleed