It's too complicated to post here, but the following article will explain it in some detail. It covers mainly the record sales part of the equation. Recoupment is a very important issue for the artist. This info is based on industry standard practices, it is possible Alizée got a better deal, but it's highly unlikely.
Keep in mind, MF/LB were both the publishers and song writers. Therefore, they get the percentages due to both those functions. Alizée is the performer and therefore only gets that percentage. The money issue gets more cloudy in regards to her compensation for live performances and merchandising. I have no idea what she might have earned for that.
http://www.meiea.org/Journal/html_ve...4_No_1_A5.html