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					Originally posted by  Sammi
					 
				 
				TD sold more albums than LOUD,TD sold more singles than LOUD,TD had more radio hits than LOUD,all in US of course.So how's Rihanna above Katy?Maybe Billboard likes Rihanna more?Who's gonna explain me?LOL I don't give a damn for that list.I know facts. 
 
And mods need to ban zzmyth from this thread. 
			
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 I really don't care about that. I just informed you that 
Talk That Talk sales was not included into Rihanna's year-end tally, since you mentioned she released two. You can bicker about Billboard's analysis to someone else.
EDIT: Also Billboard's tracking is December to November, meaning 
Loud got it's entire chart run counted, while Katy's does not include it's sales from September, October, November 2010 (obviously). Maybe those 300k+ difference in album sales weigh more than everything else. Either way, Billboard didn't make a mistake.