What im thinking is that the Xbox1 will sell 1 million or less at launch and the PS4 2 millions or a slightly more.
I think both of them will sell less than the Wii U did at launch, because of the price and the fact they are competing with each other ( for the same customers).
Lifetime sales, it might be x4. I dont expect Xbox1 to sell as much as the 360 but slightly around what the first Xbox did.













