>>724602540
Nintendo spec'd hard into bring the platform for experimental 3D stuff, mainly platformers and action-adventure. Mario 64 pretty much defined what the system was for, to both consumers and developers.
Also, Nintendo were notoriously stingy about lending devkits to third parties, whereas Sony let anyone throw their shovelware on the platform.
a funnier statistic is to look at the number of 3D platformers on the Saturn. there were three; two of which were multiplats and one that was a licensed tie-in only released in Japan. If you want to know why the Saturn bombed, that's why. fifth gen was THE platformer gen, not having any major ones was suicidal.