It really was a bit weird, games that got ported to Mac almost always had higher-quality graphics. The X-Wing port looked incredible compared to the PC version, and so did TIE Fighter. For whatever reason, the default viewport on Mac OS was 640x480."
But that all went out the window with Quake. Once PCs got 3D graphics cards, Macs just couldn't keep up because those companies wouldn't write Mac drivers for their top-end stuff. I do remember getting a Voodoo 2 once 3Dfx started selling it for the Mac, and Unreal looker absolutely gorgeous.