Britney will and always will be a better dancer and she was never booed of stage and noone walked of stage.
She out grosses Bey with less dates meaning that more people want to see her than the other one. And who did Beyonce pave the way for Rihanna and who.
Brit albums have been musically always different and Blackout was critically praised.
The VMA are only big of Brit and that is why they always try to pretend that she is going to perform or attend. And Brit performances are iconic. And if Brit performances were so terrible artist like Beyonce and Christina would not steal her performances.

She is bigger and will always will be bigger.

Britney has only two endorsements and earns 20Mil less than the overexposed one.