Is this a joke post? The gap is not even 2:1 over all yet. 6-7:1 LMAO. Isn't Xbox around 5M vs PS4 close to 9.1M. And dont forget the gap was and is less than 2:1 during worse Xbox time. 500$, kinect and bad word of mouth. Its all changing slowly.
Jesus guys, we are not even in the first full year of console cycle. Stop writing off one big competitor. Everything and collection yu mention will only increase PS4 sales. But what about Forza Horizon 2, Sunset Overdrive and almighty and mother of all the collection The Master Chief collection. Destiny and GTA are on both console, if marketed well, it might do 1.5:1 ratio. But nothing big.
X1 just came off a 500K-600K SHIPPED quarter.
And that is with some major releases during that quarter.
If that sort of trend continued it would put the X1 in the 3-4m a year range. Lets just give it the benefit of the doubt and say with the current numbers it would be around 5m each year WW. So, 5m x 4 more years would be another 20m which would put it lifetime around the OG Xbox / Etc.
When it comes to the console leader, generally the middle years are massive years with 20-25m units sold. So if you give Sony about 12m at the start of 2015, with an additional 12-15 sold for Y2, then 20+ sold for Y3/Y4 you would have the PS4 around the 70m or so mark by Y5.
Will it end up being like this? Dunno. I'm just throwing opinion out there based on the only facts we have, which are the actual numbers in hand. So yeh, 6-7:1 is hyperbole but it could very easily be WW overall 3 - 3.5:1 with many overseas regions being 7:1 or higher through the course of the generation. And lord knows what happens if the system becomes popular in China.