Did they say who was porting this? cause if they ran at 720p on the Wii U (not sure if they did, correct me if i'm wrong) then I don't see why they can't bump that up on the Switch considering it's a lot more powerful, Mario Kart 8 got bumped up to 1080p on Switch
Well the WiiU version dropped to the low 30's in places so locked 60fps everywhere would be a big improvement over the WiiU version. But if they can run it at 720p/60fps portable then it should easily manage 900p-1080p docked.
LTD: PS4 - 125m, Switch - 110m, XBO - 51m
2020: PS4 - 9m, Switch - 22.5m, XBO - 2.5m, PS5 - 4.5m, XBX - 2.8m