3D World will be the lowest selling 3D console Mario

[Maris]

I disagree

3D World in NSMB terms is like the jump from New Super Mario Bros. DS -> New Super Mario Bros. Wii

Both of these series started on a handheld first, and gaining 4-player co-op is going to be a major selling point for 3D World just as it was for NSMB Wii.