Adam Levine Earns 75,000 while Christina Aguilera Makes 225,000 per Show on," The Voice": Is she worth it?

Blake Shelton, Adam Levine and Christina Aguilera on The Voice

According to the Hollywood Reporter, Christina Aguilera earns 225,000 dollars per show on The Voice.  Do you think she adds that much to the show to be paid that much?   The other cast members are reported to earn 75,000 per show.  Ms. Aguilera also has 2 hair and makeup people,an assistant and producer.