Uh. Sounds like you want them to change the art style. From a technical standpoint Witcher 3 is leagues ahead of BOTW.
Not even a contest. I own Witcher 3 on Ps4 Pro and while i dont particularly like the game ( too clunky/no climbing mechanics) its blows BoTW away on a technical level (obviously). Actually playing the game though BoTW > Witcher 3