Referencing an earlier post of mine because it's relevant here. The 480p one is the Wii native res, followed by approximations at 720 and 1080p.
http://4x86.com/mgal480.jpg
http://4x86.com/mgal720.jpg
http://4x86.com/mgal1080.jpg
The bottom three are with anti-aliasing. I really really really wish more games used AA @ 720p as the jaggies are still noticeable (Mario Kart 8, I'm looking at you, though 2xAF would have helped, though it's not as noticeable as the jaggies):
http://4x86.com/mgal480AA.jpg
http://4x86.com/mgal720AA.jpg
http://4x86.com/mgal1080AA.jpg