I think your personal taste in games might be clouding your judgement here. Even counting only US releases the Saturn has far more than 10 good games.
Without looking at a game list:
Panzer Dragoon Saga
Daytona USA
Virtua Fighter 2
Fighters Megamix
Street Fighter Alpha 1
Street Fighter Alpha 2
Panzer Dragoon
Panzer Dragoon Zwei
NiGHTS: Into Dreams
Guardian Heroes
Because I owned them!
I would say the "best" Saturn game is probably Grandia, and it is certainly inferior on the PS1. Being Japan only does not count negatively towards it.
Following closely to that are RAM cart fighting games. X-men vs Street Fighter on the system blew the ps1 version out of the water in every way, and MSH was also quite a bit better. Street Fighter Zero 3 was the definitive home version until the ps2 alpha collection.