Wel considering that in fighters you only have 2 characters and some enviroment, KI could look like that.
But the Banjo-Threeie
and Jet Gemini are games that contain big worlds and plenty of other characters which will take plenty of processing. While the worlds might be just like in those pics, the characters and surely casual enemies will look less detailed. Just look at the intense detail in the 4th pic, especially the texture and bump mapping and the smooth characters showing a lot of poligons which will not be on them in a real game.