Comparison of a Nintendo Wii U set to 1080p vs 480p to see what it does for the vWii (virtual Wii mode). It appears that if the system is set to 1080p the Wii U does some upsampling and sharpening. If the system is set to 480p it looks like it's left to the TV to do upsampling and in my case it doesn't filter it as harshly so the edges are less harsh.