We all know the PS3 is doing better at this moment than the 360 was doing last year.
In the biggest week of the year (in 2008), over 870k 360s have been sold. The PS3 only needs to sell 130k extra to achieve the million mark.
Now, this isn't guaranteed just because the PS3 is doing better now than the 360 was last year, but that's the week Final Fantasy XIII will be released in Japan, giving the PS3 a big boost there! I'd say the possibility is 75 %.







