I think the PS3 passing the Wii is predicated on the PS3 eventually dropping to 150 and lower, which I am not convinced will ever happen. (Also, Nintendo needs to completely abandon Wii, which is very likely to happen.) Sony and Microsoft seem very intent on keeping their consoles in the 200-300 dollar range, which is too expensive for a last gen console.
Its remarkable that the "cheap" XBOX 360 launched at 299.99, and it has only dropped by 100 in an 8 year span. I get that there were multiple bundles and you get a lot more now, but someone who just wants buy the console and take it home to play Madden may not care about WIFI, HDMI, larger flash storage etc.
Lifetime Sales Prediction - 6/29/2013
Wii U - 38 million
XBOX One - 88 million
Playstation 4 - 145 million
