Her last 3 singles were top 40 and she had Come On Over Baby at number one in 2000, then Lady Whoralade and Beautiful, Top 40 wise Aguilera is the artist of the decade not Avril
Beautiful was a #2 Hot 100 Singles hit. The song did reach #1 on the Top 40, which is the chart Billboard mentions. Avril had never had a #1 Hot 100 before Girlfriend this year.