Chart achievements has lost its importance ever since Billboard changed the system, in Rihanna's case, she achieved many chart records before the change happened, it's the same for record sales, ever since they started to certify streaming as real sales, the once honorable "best selling artists" title lost its power too, the only thing left to value artists, is their legacy and impact in Music (not popular culture), which is the only thing that record labels and billboard can't manipulate.