So you believe PS4 will start pulling 20m+ per year consecutively while NX will sell only 5m on its 2 first years combined?
I strongly disagree with your prediction. This is definitely not going to happen.
Bet with Teeqoz for 2 weeks of avatar and sig control that Super Mario Odyssey would ship more than 7m on its first 2 months. The game shipped 9.07m, so I won