I did say that the graphics chips were 64-bit, didn't I? This and the bus-width go hand in hand (if you have a 64-bit bus it implies at least something can write to it 64-bits at a time). But nobody (outside of console marketeers) uses bit-width for anything but CPU.
Well, yes, but by comparing it to the 64-bit bus of a Pentium I thought you were implying that it only did 64-bit data transfers while the Jaguar is also capable of doing 64-bit operation on data. I'm sorry if this was not what you meant.
Somehow I don't think Robert counts as such either.
All the bitness in game consoles is mostly marketing to me. The NeoGeo was even marketed as 24-bit while it has no 24-bit component at all (unless you count the 24-bit address bus of the 68000

). Seems the just added the 16-bits of the 68000 with the 8-bit of the Z-80 to make that claim.
I like to find out the real specs of the components the system is made of thus the marketed bitness is irrelevant to me. The speed is an important factor too. A 32-bit system at a higher clock speed could perform better than a 64-bit system at a lower clock speed.
The Jaguar chip set had great potential as high-color 2D sprite pusher. But to make use of that potential you need lots of storage memory. Unfortunately the ROM prices at that time limited the cartridge size to 4MB which is not much if you want to have big colorful sprites with many frames of animation. CD-games offered far more storage space but the Jaguar only had 2MByte of ram to load the CD-data into. This ram was shared between code, audio and graphics data thus leaving even less memory for graphics data for a single load from the CD-rom.
Another problem for the Jaguar was that is was a machine on the transition from 2D games to 3D games. While the Jaguar was great for 2D games and could do flat or shaded polygon games very well, the games industry was moving to 3D games with texture mapping. The Jaguar lacked hardware for doing texture mapping. So the Jaguar was to late as a 2D games machine and too early as 3D games machine.
Lots of the Jaguar game titles are indeed not much better than 16-bit consoles. Many because they were direct conversions from the Amiga (Pinball Fantasies, Cannon Fodder, Syndicate, ThemePark, etc.) that did not enhance the game for the Jaguar's capabilities.
But there are some gems too like AvP, Iron Soldier, Tempest 2000, Wolfenstein, Doom, BattleSphere and my personal favorite Rayman. And I like Raiden and Evolution Dino Dudes as well even when they do not showcase the Jaguar's capabilities.
Robert