In 1988 there was nothing like Calagari on the PC side for 3d graphics - at least not at an accessible price running on accessible hardware (1meg A500/M68000) from floppy disk - e.g. Autdesk's AutoShade was $1000 without a modeler and views could not be updated interactively as they could with Calagari. In other words, Autoshade was in the same price range as the entire Calagari system (sans monitor) and required several thousand dollars in additional software resources.
Considering the the cost of the 80287 math coprocessors required by the modeler (ACAD) and the costs of VGA adapters in 1987, the cost of doing 3D graphics on a PC was substantially more than the Amiga.
Sorry, I was talking more about 3D games, in particular those that became popular around the time Doom came out (1993) which is the same year the CD32 was released.
The Amiga was great for 3D production graphics. Software such as Lightwave and Imagine 3D punched way above its weight (and cost) for a while.
Considering the the cost of the 80287 math coprocessors required by the modeler (ACAD) and the costs of VGA adapters in 1987, the cost of doing 3D graphics on a PC was substantially more than the Amiga.