Give me a break. The titles that have the budget to looking amazing on the PC are not developed for the PC, they're developed for the "10 times weaker" consoles.
This isn't all maths and engine development. It's 70% art resources developed with consoles in mind. You model something with thousands of polys less\low res textures because that's all consoles can handle. I can only afford cinderblocks for my house not marble.