Well it makes sense. Talking about quality and quantities sold from the Britney's latest effort, she has declined. In her endorsement vein, she has continued to grow upon her success.
People could say this about Beyoncé and Lady Gaga just because their latest albums have sold less than their others. But its false. If she was to release a good quality album (no offense FF) it WOULD sell. Obviously, albums don't sell as well as they used to when she first started out but she has the potential to have a 10 million album again.
no, she just had her biggest radio hit ever, and another very successful worldwide single. of course she won't be as successful as she was at her prime, but I think she can still show us a lot in future.
as someone said, she's an estabilished artist
and with that kind of debut, it's hard not to decline lol.