My pessimistic prediction. Launch sales of both next gen consoles are amazing and all but they are pretty meaningless in the grand scheme of things. 60% of PS4 owners being Vita owners further confirms that it is just the super hardcore fans that are rushing in to buy these consoles probably because it has been so long since ps3/360 came out. Once those hardcore users all have their shiny new consoles, sales will drop hard. I believe the more casual gamers will be content with the 360/ps3 because the graphical jump isn't as big as last gen so everything not first party is getting ported to ps3/360 anyway and because many of them now just play mobile games.
PS4 - 70mil
Xbone - 45mil
Wii U - 20mil
or alternatively, the more casual users end up still being interested in consoles and the ps4/xbone do as well as their predessesors did.
PS4 100mil
Xbone-90mil
WiiU-30mil
