Here's the Nintendo Switch next to the Wii U GamePad, a 3DS XL, a phone and more - Polygon
Nintendo Switch vs. Wii U
Chart: Wii U Outsold by Xbox 360 and PS3 in Launch Week | Statista
Do Wii Games Look Better on Wii U? - Wii U vs Wii Graphics Comparison - YouTube
Nintendo Wii U vs. Nintendo Wii: fight! | Engadget
Wii U - Wikipedia
Nintendo Switch vs. Wii U
Nintendo Switch Vs Wii U: What's The Difference?
José Otero on Twitter: "Here's a graphics comparison of Zelda: Twilight Princess HD. Wii U vs GameCube and Wii. https://t.co/IVpZcEdW0C https://t.co/zZ1Flc5ftA" / Twitter
This picture of the Nintendo Switch and Wii U is kind of mind-blowing - The Verge