I don't think Sony wants it with Nintendo just ask Iwata.You can go back and do the history but plain and simple Sony HATES nintendo. I do believe that they will do everything in their power to try and take attention and gamers away from Wii U. Let's look at how.
1st. I believe Sony will in some form show a tech demo for the PS4. Now sonys CEO said they would be the last to show something and maybe that's true. If that's the case it leads to my second way.
2nd. 3 games! The last of us by naughty dog, the last Guardian by team ICO and the God of War Acension by Santa Monica. These will in my opinion be the 3 best looking games of this gen from a pure polygon aspect. Sony will show off these games and try to sell gamers they don't need the Wii U they can get close to next gen graphics on the PS3.
3rd. Now this goes in line with the above point. A price drop. Sony will drop the price this holiday season when the Wii U is released. So they are going to say we have this great library of games, PSN, blu-ray player and all the 3rd party games the Wii U will launch with(for the most part) by PS3 instead of the Wii U.
Now this is what nintendo must do IMO and sony doesn't stand a chance. 1 show unreal 4 demo running on the Wii U. 2 show a 3rd party next gen graphics exclusive heading to the Wii U. 3 show that they have an amazing 1st party engine for next gen by showing off Retro's new gaming that the newest rumor said will be massive. 4 show off nintendo network and how it can best PSN and LIVE and that's it.
What do you guys think?
http://www.nintendo-gamer.net/2012/04/24/iwata-asks-kazuo-hirai/