The difference to us, is that we are using two distinctly difference sense-systems to receive the vibrational information.

We cannot see like we hear.
We cannot hear like we see.

Our sight is in a three dimensional tableau. There is depth in color, depth in shadow, and depth in depth.

Our hearing is far richer. There is depth in pitch, depth in harmonies, depth in loudness, depth in direction, depth in the sounds vibration compared to your vibration.

So, yes, science can classify them both as vibration.
But, our senses were designed to bring us a rich environment by giving us two very different, but complementary, views of the world.