All Wii U games in our videos are recorded from captured footage, the system is set to output 720p as not all games natively support 1080p.

Manufacture’s Description
Wii U combines exceptional gameplay with the ability to support full HD graphics. Each console will be paired with a new groundbreaking controller, with its 6.2-inch wide screen. Previously, video games played on a home consoles have been confined to the TV and offered identical viewpoints to each player in a multiplayer environment. The new controller enhances that experience with different viewpoints available in-game and in differing games/game situations. Also, watching TV and playing console games have been completely separate experiences. The new controller removes these boundaries, creating a more dynamic and fluid gaming and entertainment experience. Examples of this new functionality include:
Packed with every console, the revolutionary new Wii U GamePad controller is a second window into your gaming world.
For the first time, experience your favorite Nintendo worlds in crystal clear high definition.
Shop, download and play.
Games, video entertainment, free demos and more all await in the Nintendo eShop—a digital storefront accessible from every Wii U console.
Enjoy TV, movies, and sports in new ways.
Nintendo TVii makes watching TV more simple and fun by bringing together everything into one seamless, second screen experience on the GamePad. Enjoy a personalized program guide, remote control, and social second screen—all in one application.
Connect and be social.
Communicate with fellow Wii U players. Video chat with friends from afar. Browse the Internet. You can do it all with the built-in connected features of Wii U.
Play your Wii games too.
No need to leave your Wii stuff behind. Nearly all Wii games, data and accessories can transfer directly to your new console—making it a great value.
Setting Up the WiiU
Then using the mClassic HDMI add-on to upscale upto 1080p we see the effects and enhancements given to all games. You can see in the comparison video the difference mClassic makes for these older WiiU games.