Ail on 19 July 2011
Small correction for your 4).
Ken Levine may have been part of the small video clip Nintendo showed at E3 but he has recently announced that he has no plan to develop any game for the Wii U. So looks like it was just a tad too early of an announcement...
Here is the article where he says it :
http://www.gamasutra.com/view/news/35812/Levine_Irrational_Currently_Has_No_Plans_For_Wii_U.php
PS3-Xbox360 gap : 1.5 millions and going up in PS3 favor !
PS3-Wii gap : 20 millions and going down !
