Why are we comparing 2010 albums to 2003 albums? Katy's singles obliterate Britney anyway.
Why would we compare 2003 singles to 2010 singles?
Anyway, why are we even comparing two time diamond selling, grammy winning, iconic and legendary Britney Spears to quick lil singles Tity Perra in the first place?
How do you figure that? One of the Boys is 2x Platinum and has shifted over 700,000 copies. Both IKAG and HNC have sold 700k+. PRISM is Platinum with 400,000+ in sales, and over 2.4M digital track sales.
TD is undoubtedly her peak but she's no one-album wonder.