COD is one of the biggest franchises ever. It should not sell that bad on any console. It even sold like 1.7M on the Vita. COD has been in decline on Nintendo consoles since COD 3 on the Wii.
The Switch audience is not the same audience as the Wii and Wii U.
Bet with Liquidlaser: I say PS5 and Xbox Series X will sell more than 56 million combined by the end of 2023.