First song I could hear a difference, but had trouble forming a preference.
Second song I definitely preferred the Revel. Focal seemed a bit too bright/thin.
Third song was a tiny preference for the Revel. I found the higher octave piano notes to be slightly more natural and neutral sounding. Lower octave piano and drum I had no preference for either speaker.
Fourth song was also really close. I thought the male vocal sounded a bit more "open" on the Focal, but also a bit less natural. Slight preference for the Revel again.
I tried to ignore the bass for the most part, as it has more to do with position/room than the speakers, but man, those Focal bookshelves put out quite a lot of bass for such a smaller speaker.