While I understand how sales curves work, it is also my belief that Nintendo will end, of it's own free will, the Switch. I believe the rumors that say that there is a new version on the horizon. That is why I insinuated that if we really treat it as a Pro then it will change the nature of the conversation.
I hold that the Switch, in its current incarnation, will top out at 65 to 70 million before that happens. An informed response would simply to suggest that the new model will in fact be a pro numbers and then I could have reevaluated.
It sounds like we need to have a more grounded conversation where we try to understand each others projections or predictions.
PS4 Pro sales #'s haven't been separated from PS4's total. Why would a Switch Pro be considered the end of liftetime Switch sales? If we are counting "Pro" sales separately, then I don't think PS4 base model has passed PS3 sales yet.