Focusrite iTrack Pocket vs Apple iPhone Built-in Mic

The video compares a track recorded on an iPhone with and without the Focusrite iTrack Pocket, highlighting the difference in audio quality that can be achieved by using the iTrack Pocket.

We reviewed the iTrack Pocket as soon as it became available and were left impressed. This video is even more demonstrative and we find the difference pretty clear... what do you think?