It was mentioned how here how Wuu would probably lead to some more support for PSVita --> PS3/4 connectivity
(I'm pretty sure I wasn't the only one to mention it)
there is even a dev mentioning it here:
http://www.develop-online.net/news/37930/Yoshida-Wii-U-will-inspire-Vita-experimentsSCE Worldwide Studios boss Shuhei Yoshida is interested in Nintendo's recently announced Wii U, and says it will likely inspire PS Vita developers to carry out experiments with the newly named Sony handheld.
"It is very interesting the ways that Nintendo went with Wii U, and I was surprised it wasn't exactly as it had been rumoured," Yoshida told Develop at E3.
"Already people are starting to ask about linking Vita and PS3 to do something similar, in terms of using two screens, and having controls on the screen.
"That's very interesting, and we will have to experiment," he added, before suggesting that such work was already, to a certain extent, underway.
but who would be copying who in this case?
Obviously Nintendo has the better and cheaper implementation of connectivity,
but Sony's PSV will hit the market first.
Nintendo's will have 0 lag when using the controller with the screen in game
PSV will probably not be quite so quick.. but then again it processes it's own video on the PSV
Nintendo allows you to take the game from your TV and instantly switch it to the controller and continue playing.
PSV allow you to save your game, then load it on the PS3 version (or vice versa). This requires you to own 2 versions of the game
But Nintendo's version doesn't allow you to take that handheld controller with you wherever you go
PSV is a true portable. self contained and does all of it's own processing.
A uScreen controller will likely cost $60-$80
a PSV will cost $250-$300
Now it's true that Nintendo experimented with connectivity first, but Sony has been the only one pushing it as of late (PSP-->PS3). Nintendo didn't attempt it at all with DS-->Wii and there has been no mention of 3DS -->Wii either.
Funny enough, there has been mention of Wuu-->3DS though, which is funny because uScreen + (3D)TV is basically a 3DS(XL) already.