I'd like to make this clear:
The Windows version of Quake2 required 16Mb of RAM minimum, but without vm it needs about 34Mb of RAM. And the leaked Hyperion port of Quake2 will run on a 64Mb setup, even with GL.
The reason this Quake2 port needs 128Mb is because it is not optimised. Nothing more, nothing less. Any conversations trying to compare an Amiga to a PC are again irrelevant and useless.
The End.