Yea they totally didn't use any of the same assets.
Which is why 90% of the models in the game are the EXACT SAME just rendered at a slightly higher resolution.
If they actually remade the game from the ground up it would look a hell of a lot better then it does. It doesn't even look good by 3ds standards. You are seriously talking out of your rear.
You're also sitting here talking to me as if I haven't played the game myself or own it which I do. And yes, only a few bosses in the game and Link where actually touched. The rest are just rendered at a higher resolution. If you knew what the hell you where looking at you would know that.