ok... I'm seeing people talking about Nintendo showing PS3 and or Xbox360 footage. This is fairly common practice and happens quite a lot.

For Instance Sony used Project Gotham Pictures when promoting the PS3

http://kotaku.com/231619/sony-uses-pgr3-to-promote-ps3

Square Enix used super imposed Xbox 360 buttons on PS3 FFXIII Images for promotion.

http://zapp5.staticworld.net/news/gr...d_original.jpg

And Probably the best current example is all Battlefield 3 videos, demos and promotions are all PC footage, Nothing from either console has been shown.