I mean, Magnus is so much more better player than Hans that even if Hans didn't cheat he would probably be worse in rematch. But in all sports sometimes underdogs win. In couple yt videos i watched it was said that Magnus played bad game and that Hans already gained an advantage in opening. Hans said that he prepared opening play but if he is indeed a cheater he maybe used engine just for opening. We'll probably never get an answer if there was cheating or not