As somebody who is currently playing Witcher 3 at ultra. This looked incredible!
I love Witcher 3. I love Zelda. There's no reason you can't enjoy both, but people tend to split everything into godly "beastmode best of all time" and "utter garbage".
The trailer was also a very short look at the game with large landscape shots that were meant to show off how large the game is without establishing what kind or how much content it contains, as well as brief segments of specific content (cutting down trees, shooting down beehives, different kinds of armor and combat maneuvers, different kinds of monsters).
I could splice together a trailer of Witcher 3 that makes it look utterly empty by just focusing on landscape shots. I could make Skyrim look like the most handcrafted content filled game ever by just focusing on a few segments of gameplay. To have any idea of the balance between size and content in Zelda, we have to see an extended playthrough, not an edited trailer.