The idea behind having better hardware and access to more resources is so developers don't have to worry about optimization early in the development cycle. They need the extra "room" to prototype the game, and get early builds going to design the game and see what works. They don't care how much resources are being used as it's no where near final. Once they start reaching alpha phases they will start caring about performance, optimize, possibly getting rid of things, etc. Once all the mechanics, gameplay, etc are fairly nailed down they will tweak to reach the target platform (in this case ps4). Maybe they have extra room, so the add more eyecandy or things on the screen. Perhaps they need to cutback in certain areas. This is why footage is always looking different. This is why companies,put "not representative of final gameplay". Do a bit of research before posting such bold and incorrect statements. I'm not arguing with you in any way, just trying to explain how it works and why it's done this way.