It isn't false. He said Beyonce is the most successful artist in the past 15 years.
Success does not just equate to pure album sales. Those arent "facts". It's many things that define success and Beyonce has consistently done that while remaining on top for 15 years, which was his point.

boy you're over there just struggling with the english language:
dverb
adverb: most
- 1.
superlative of much. - 2.
to the greatest extent.
"the things he most enjoyed"
this is not a statement of opinion or open to subjectivity - beyonce is in no way shape or form the greatest artist of her generation.
when we say ELVIS, the BEATLES, and MICHAEL JACKSON dominated their era, we judge them by their scope of hit records and albums, how influential they were over the entire culture.
Beyonce' has influenced the entire music culture? she's shattered sales records? singles? album sales? concert ticket sales etc etc...<<<<< these are what we measure great artists by.
you can't just sit at your computer and change universal laws because you're over there hugging yourself and squeezing your eyes real tight
