Check out how New Super Mario Bros. Wii graphically stacks up against New Super Mario Bros. U!
Which Nintendo Platformer Is Right For You? - GameSpot
New Super Mario Bros: Wii vs Wii U Graphical Comparison - IGN
New Super Mario Bros. Wii Nintendo Wii Guide-Walkthrough - Walkthrough: World 7-Fortress Ludwig Von Koopa - IGN
New Super Mario Bros. U Review - IGN
New Super Mario Bros. U Deluxe Review - IGN
New Super Mario Bros. Wii Nintendo Wii Gameplay - Yoshi and Friends (480p) - IGN
New Super Mario Bros. Wii Nintendo Wii Guide-Walkthrough - Walkthrough: World 4-Air Ship Bowser Jr - IGN
New Super Mario Bros.: Wii vs Wii U Graphical Comparison
Nintendo Wii U Review (2012) - IGN