I do like the music.
But as you said, someone else wrote it. I do admire your ability to fit your animation into the lyrics, but the drawing and animation itself wasn't anything to write home about. I also don't think the jab at Robin was really a good idea, since it doesn't add anything to the music video except for people who like to laugh at sidekicks for some odd reason.
You have talent, but I think it needs to be polished some more. I look forward to seeing your future work, and hope that it improves on this one. No offense meant.