I love the music for both and both games were part of my teen life, and I replayed Ocarina of Time a lot more... but I agree with FF7. Nobuo Uematsu is incomparable.
I would switch mechanics and atmosphere myself, but I agree overall that it is 2-2. Both are good for different reasons and they weirdly do not overlap on any of them with the exception of music which both were only slightly above average. With that said the OoT soundtrack is much more memorable. There is only a single FF7 track that I actually remember well.