@psxphill
Certainly Star Fox doesn't look like it's got 20,000 polygon, I think the game runs at 15fps, which means you should see over a thousand polygons on screen. From memory Guardian looked pretty much as good, but neither of them really had the game play.
Guardian was a 3-D version of a Defender type game. It has awesome 'arcade' gameplay and smooth controls on a stock A1200/CD32. Give it some fast ram and a 030 and it's rock solid. Yes, it doesn't have talking frogs, rabbits and foxes and yes it doesn't have a pretentious plot but the gameplay is awesome in a 'let's save the planet from invasion' kind of way (a bit like the Resogun of its day). You have to avoid blowing up friendly structures and there is good variation of enemy ships including boss battles! A CD32 pad is a must for A1200 owners though.
Guardian is under rated and Star Fox is definitely over rated IMHO. Same with Bltiz Bombers vs BomberMan, The Great Giana Sisters vs Super Mario Bros. and the same as Xtreme Racing vs SNES Mario Kart. There simply is very little reason to idolise Nintendo if your an Amiga fan. Heck, Turrican 2 beats the hell out of Super Metroid too IMHO.