I'm not sure this game can be considered a valid comparison to be honest, since Activision was well known for putting very little effort into its Saturn conversions.
Alien Trilogy, another Activision game, famously only used one of the Saturn's two CPUs... and although it was inferior to the PlayStation version I think it's pretty impressive that it was so close given that it could only be using a maximum of 50% of the Saturn's processing power, and that figure assumes 100% code efficiency which the developer is unlikely to have achieved.
Given that the PlayStation was so easy to program and the Saturn so difficult, I think the fairest comparisons are those that start with a game that was developed by a team that was actually competent on the Sega platform, since by definition such a team must also be competent on the much easier Sony platform - games like Duke Nukem 3D for example. In these cases the results are much closer with both consoles excelling in specific areas.