Well the interface to LCD controller is of course much faster than Wi-Fi. Almost anything is faster than wi-fi (especially the one in our tablets :-). The whole demonstration looks strange. Things on N8x0 display do not match things on big display (1 fish vs tons of fish, 1 house vs whole city, hildon UI vs no UI on big display, 3 thumbnails on the left in quiver vs more on big display). And of course you can't push full screen HD video over wifi (or even usb 2.0 which is ~10x faster) uncompressed at 30 fps. There is simply not enough bandwidth, they must cheat somehow. The most plausible part is accelerated OpenGL which is technically possible with our OMAP chip but still quite improbable. We'll see :-)