Sony is absolutely trolling Nintendo at this point, why else wait over a decade for these numbers? Switch is on track to outsell DS globally and sell in the high 150s to low 160s.
Even if Switch falls 1-3 million short of PS2 somehow, it's already the most profitable platform of all time and if its successor is a hit that will make PS3 kind of look a little pathetic in comparison because of its inability to follow up the PS2, especially at first.
Lifetime Sales Predictions
Switch: 161 million (was 73 million, then 96 million, then 113 million, then 125 million, then 144 million, then 151 million, then 156 million)
PS5: 115 million (was 105 million) Xbox Series S/X: 48 million (was 60 million, then 67 million, then 57 million)
PS4: 120 mil (was 100 then 130 million, then 122 million) Xbox One: 51 mil (was 50 then 55 mil)
3DS: 75.5 mil (was 73, then 77 million)
"Let go your earthly tether, enter the void, empty and become wind." - Guru Laghima