Qwark on 05 January 2019
Its doubtful if a Switch game will take that throne to begin with. In general Mario Kart is a bigger franchise than Smash. I guess it depends on whether MK9 releases. The 20-25 million range is easily possible for MK8 deluxe if 9 takes a couple of years, but I think Smash will have a hard time getting there.
Please excuse my (probally) poor grammar
