When will PS4, X1 triple the Wii U in sales?

[Ryng]

Kerotan said:

I'm more inclined to think next xbox comes out in 2021 or 2022.  Generations are getting longer not shorter.  I think the Wii U will do well to hit 16m. I see x1 doing over 50m 

I doubt.

Almost all think that this generation will be more shorter... XBO at +50m is seriusly bold to predict, more bold to predict +20m WiiU LT in my opinion.

Any way, can you write you prediction YOY for both WiiU and XBO?

And why nope... even PS4.