My opinion is something around 40 million. The reasons: Switch 2 is getting a lot of backlash due to the high prices, so it will probably hurt MKW initial sales. However, it's one of the primary options for those getting the console, specially with the bundle. I think 40 million is a safe bet, maybe 45 million.
About the Switch 2, we could be seeing another Playstation 3 situation, where people will take their time to upgrade, but at least a bit of damage is already done. So I don't expect Mario Kart World to outsell or sell as much as Mario Kart 8.








