The way I see it the Switch has a good chance of outselling the PS5 + Xbox Series combined next year.
PS4 and Xbone did around 22.5 mil combined in 2014. I think the new system will match or beat that but not by much, and I expect we'll be looking at another 25 mil+ year for the Switch.
- Switch - 27m
- PS5 - 15.5m
- Xbox Series - 10m