Furthermore, how could you even say Zelda's more immersive when it's in THIRD PERSON? That itself takes major points off immersion.
Again, immersion is achieved thorugh engagement. Not being physically in a character's head doesn't matter. Hell, games like
Tetris,
Civilisation, or even
Minesweeper can be immersive even without characters of any kind. If you forget the world around you, become absorded in what you're seeing, doing, hearing, thinking, then you are immersed. Deep gameplay can have a far greater immersive effect than anything visual.
The fact that you seem to think immersion relies heavily on graphical clout and camera perspectives suggests that the technical aspect is what you favour in video games, so much so that you seem to neglect or out-right ignore the strength of gameplay, design, and artwork with regards to immersion. Video games don't require the latest hardware or the highest frame-rates or the most realistic effects to be immersive; they just have to make you forget the world around you. Playing
Pong against a friend can be as immersive as hunting elk in
Skyrim. It all depends on how you respond to it, not on what it looks like.