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					Originally posted by Bey_Rihstan  It's actually very close, sure Katy has had bigger singles, but Rihanna has sold more albums & has received more acclaim. Not to mention the same amount of #1's | 
	
 Bigger singles
Better average album sales
Bigger tour [yes, the prismatic world tour is going to outgross the other rihanna one]
and acclaim has nothing to do with success.