http://www.eurogamer.net/articles/digitalfoundry-hands-on-with-wii-u
In testing the difference, we find results that completely subvert our expectations here; in instances where gameplay is mirrored between the two, the GamePad screen actually renders the image 116ms before the 50-inch LG screen does.
In our pre-E3 feature we asked ourselves: is Nintendo is HD ready? From what we've played here, the answer is undoubtedly yes - though perhaps more significant than the resolution bump is the extent to which games like Pikmin 3 and Nintendo Land benefit from the suite of new visual technologies at the company's disposal.
We see superior reflections and transparencies playing across the collectible fruit and mushrooms in Pikmin, and a dynamic shadow system cropping up to spectacular effect in Nintendo Land's hub-world. We even see some richly detailed fabric textures and knitted enemies in the Zelda Battle Quest mini-game that are gorgeous to look at in motion. The best part about these improvements is that they're being dealt out in the distinctly reserved fashion that characterises Nintendo, where technology continues to serve its art. Right now, it's well on its way to embellishing its games in ways we'd always hoped they would.
looks like latency issues won't be a problem
--
http://i.imgur.com/X13IL.jpg
http://card.psnprofiles.com/1/CaptainRockman.png