Predict How long will NX keep its 9th Gen lead over PS5/XBTwo??

[KLXVER]

thismeintiel said:
I'm going to guess Sony launches the PS5 in 2019, so ~2 years after the NX launches. The NX will sell ~10M in that time, so it should take the PS5 probably about a year, maybe a little less, to pass it.

Thats pretty spesific for two consoles we know nothing about...