Need to tell that to the Project Cars developers then. They are doing so many optimizations on the console to squeeze every ounce of power that they can and still are having issues meeting their goals as far as visual quality and frame rate.
Once again i don't know what that has to do with anything or what your point is.
Console games are going to continue to be shit as both newgen platforms struggle to even hit 1080p30 and all the unified memory in the world is proving irrelevant.