I think Super Volleyball might have 4 tracks, but still I Think I would prefer 4 good tracks to 15 bad ones though.
OD
4 tracks is actually quite a lot for a sports game. Night Creatures can be compared to Simon's Quest and Ghost Manor is a questy platformer, kinda like a map-less Super Mario World.
Imagine those games with only a few tracks.
Of course, like you said, good ones go a lot further.