no clue. ps4 will have an incredible launch and will break some records but to be honest, i doubt that ps4 will sell so unbelievable good after the hardcore fans bought the console. we talk here about the real fans. even the ps3 for an unbelievable high price sold over 500k in europe alone at launch. playstation has a lot of die hard fans and that is the reason why it will sell so good at launch, not because the mass market will be so impressed by the console in the first year.
the free advertisement for sony with people uploading gameplay from their ps4 on facebook will surely help but not sure how much.
i say maybe 2015 but it could always happen that the mass market will jump on wii u or xbox one because of something we don't know about and that would mean that it could take even longer.
