Of the 14 Wii U launch titles I have played the following are the graphics show cases in order
Assassin's Creed 3 - This is Uncharted 3 level graphics, animation, and much broader scale. Amazing stuff. Nothing else on Wii U matches this.
Black Ops 2 - Best in class for shooters with solid visuals at solid 60 fps. Also supports split screen co-op with two players from same machine getting individual screens both running solid. So one player would be on HDTV, second on Gamepad and both could play together online or against bots and even System Link if you happen to have multiple Wii U's on your network.
New Super Mario Bros U - It's cutesy Mario art style, but it looks crisp and gorgeous... Mario in HD is awesome
Nintendo Land - Amazingly good looking primarily due to art style. I love how good the Mii's look and especially how well they adorn the various Nintendo themed costumes as they participate in Zelda, Mario, Pikmin, etc themed mini-game collections.
Ninja Gaiden 3 - Razor's Edge - Very viseral and stylized violence... very fast action. Bloody mess and highly entertaining and engaging gameplay.
Darksiders 2 - Identical to PS3 version (meaning great art style, solid framerate, epic scale, etc). Gamepad makes this the best version of game.
Sonic and All-Stars Racing Transformed - Looks and runs great even supporting 4-player split-screen racing. Amazing variety of Sega IP themed cources, awesome Sega IP characters with unique transforming vehicles. Really stand out water physics for water portion of courses reminding me of Wave Race.
ZombiU - Very depressing looking artistic direction, but it is high quality. Extremely hardcore game. If you don't play it smart, you get punished.
Batman Arkham City - I felt the PS3 version looked better. Still a great game and some nifty Gamepad implementation in place
I don't think I need to go on
