If it were literally just developed and optimised for the best, most powerful components on the market, I'm pretty sure anyone playing it would end up like the Nazis at the end of Raiders of the Lost Ark.
Honestly I could see a normal scalable PC game made for multiple hardware set ups going either way. Maybe mind blowing, maybe an unoptimised mess for most set ups.
They're pretty much the poster child for just how much juice you can squeeze out of fixed hardware, and why console hardware can't just be judged by PC standards.
Still, I'd love to find out what they could do with basically no limitations...