Crazy how people underestimate november with black friday, all the games and december with christmas.
PS4 will without a doubt reach 17M by 2015, only 5M to sell in 3 month, november and december will be huge, remember the PS3 did 4,9M in the same period ( october -december 2007 ) , so it's totally crazy to think PS4 wont do at least that, and likely much better.
Good thread to bump in 2 month
Predictions for end of 2014 HW sales:
PS4: 17m XB1: 10m WiiU: 10m Vita: 10m