It's possible, but not quite hard.
We know PS4 have been doing from 2 to 3:1 and averaging 2.5 this year... but we also know that the Holiday Sales is quite a lot centered on USA (we have PS3 vs X360 numbers to remember, where PS4 were like 30-50% above during all the weeks the whole year, but then during holidays x360 were stronger because of US and sometimes even picked up a lot of the difference accumulated by PS3) and PS4 to X1 ratio in US is quite a lot lesser (like 1.5) so we can end up the year with a dif that is greater than 2 or even 3:1 to reach 10 or 20M... So as people said for PS4 to reach that with certainty X1 must stay below 9M year end and PS4 over 17M, the first is hard, the second is almost certain.. if X1 reach 9,5M it will be quite hard because PS4 probably won't have enough stock to go over 18,5M.
duduspace11 "Well, since we are estimating costs, Pokemon Red/Blue did cost Nintendo about $50m to make back in 1996"
http://gamrconnect.vgchartz.com/post.php?id=8808363
Mr Puggsly: "Hehe, I said good profit. You said big profit. Frankly, not losing money is what I meant by good. Don't get hung up on semantics"
http://gamrconnect.vgchartz.com/post.php?id=9008994
Azzanation: "PS5 wouldn't sold out at launch without scalpers."
