Oh yes you must be retarded, silly me.
Perhaps you didn't notice this is the "Ness Beats Everything Collab"
As in it is a fictional take on Ness's power exagerrated so he is made invincible, to enable him to defeat any character that stands in his way. It was delibrately made this way for the purpose of entertainment. It is not some realistic movie with an in depth plotline. I'm getting really sick of retards who think that is the only way a movie can be good.