Super Mario 3D World and Mario Kart 8 have PS4/XOne like graphics and both run consistently at 60fps. Since Zelda is generaly a game that gets even more attention regarding technical aspects, it can have awesome graphics even with a huge open world, especially if we assume that it will run at 30fps.
In my opinion, there are tow companies that know how to use their own hardware: Nintendo and Apple. Both know how to match hardware and software incredibly well.







