IFPI named PRISM the top selling FEMALE ALBUM. It doesn't matter if she would have outsold her, she was still wayyy behind. That's never going to change (2.8 Million/2.3 Million)
Roar sold 10 Million+ WW and was the biggest female hit.
No one cares if BEYONCE ended up outselling Katy in 2014.
Actually the more I think about it... It's Miley. In terms of impact... And she had two hits from first half to second half. Katy just smashed really hard but she didn't own anything. Beyonce owned a month basically...that's it.
There's more to owning years than hits Beyonce's unmatched achievements like the SuperBowl, surprise release and her entire presence in general. And her hits were recurrent as they can be, so she wasn't musically away at all in this sense. Bey .>