Why would Beyonce even be compared to Britney?
Britney Spears is literally a phenomenom. She became famous instantly.
HER DEBUT ALBUM DEBUTED AT NUMBER 1 ON BILLBOARD.

Her SECOND ALBUM sold MORE copies in its first week than ANY OTHER SOLO ARTIST (1.3 million)

with her 3rd and 4th album she became the only artist to have her first 4 album to debut at #1. and now she is the only artist to have 6 albums debut at #1.

You have to realize who had a greater impact on pop culture:
Britney is the BEST SELLING ARTIST OF THE 2000s, beyonce is not
Britney Spears was voted MOST POWERFUL celebrity (forbes 2002) beyonce was not
Britney Spears was the most searched person on the web for the decade 2000, beyonce was not.
Britney is the best selling teenage artist ever. Justin Bieber can't beat her.

You really can't beat her.
However, I must admit, her management recently has been treating her like shit and is just trying to use her NAME to sell for their own greedy benefit. Let her be musically free and creative, and ull see the old crazy Britney again <3