It's definitely comparable.Mario is a completely different beast and not at all comparable. A Super Mario 3D World-type of multiplayer 3D Mario would no doubt sell better on Switch than a core single-player one. I'm sure they'll make one again after Odyssey as it makes too much sense with the Switch. A multiplayer 3D Mario like 3D World would have sold more than Super Mario Galaxy on the Wii as well.
Breath of the Wild type revival = Super Mario Odyssey increasing sales on it's predecessor.
Whether or not a 3D multiplayer Mario would sell more is an entirely different discussion.