Well
The ps2 sold ~150m units
The ps3 ends with like 100m at best?
That is 50 million less.
The Xbox 1 sold ~25m units. (you know the original xbox not the xbox one...... seriously the new xbox one has a shitty NAME!!!!!!!!!!!!!)
The 360 ends up with maybe 85m? thats 340% more consoles sold than last gen.
Sony already lost this generation by userbase increase/decrease. (they are the only ones that lost customers)
Last gen Sony had a huge advantage with its userbase because the xbox brand was not established at all and they almost lost this gen in terms of numbers. Now its competing with an established brand so there is no guarantee they will win.
Todays gamers are for the MOST PART (not all of them) not gamers at all they are mainstreamers and people that want to be entertained. And if the X1 offers enough value for people that want entertainment and want an all in 1 box then MS could easily win.
The time when consoles were made for gamers (or well the games were made for gamers) is long gone the last remnant is Nintendo. So time will tell not some random prediction.
