The Saturn had good 3D games! The work it took to get a decent 3D games not many game studio could do. In fact it might have been only Sega. And for something as simple as a 90's 3D map the Saturn could certainly do with ease, once again if it wasn't half assed
The most impressive engine released retail on Saturn was Slavedriver, which was developed by Lobotomy for Powerslave and re-used for ports of Duke Nukem 3D and Quake.
IMO the games which flexed VDP2 were the most impressive since you could do crazy raster effects without dropping the frame rate one iota. Equivalent effects on the Playstation, if even possible, came at a cost of GSU fillrate.
Yeah that's fine. The model 3 arcade board also used quads. The issue was the architect of the Saturn hardware itself along with the woefully inadequate development tools that developers had to use from sega