Great video.. Better than the first, and seemed to be comparing apples to apples, even without the expensive sound card. (Well comparing sweet juicy Amiga apples, to wormy rotten PC apples..
And really, that remains an issue today. What's a stock PC? What makes the most of some kind of hardware, what just demands more expensive cards? (This is why I've never liked PC demos, but that's an aside..) When you get an Amiga, you get Amiga graphics, sound, all that, period.
Anyway, very cool video. Even when the games were quite similar, often the Amiga version had something extra (Aaargh's little people running around comes to mind).