Lolz @ this topic.
Seriously, I never like Christina and some of her fans but combining sales of singles and albums doesn't fair for big artists from early 2000s. Someone like Gaga, Taylor, Rihanna will surely sell more record than other big artists from 2000s just becoz of digital sales power !
In the other hand, 24K isn't a good situation for Christina whether you like it or not. She went to #1 just becoz there's no rival in the chart. I doubt that RCA or Christina care about #1 album more than the sale figures !
Christina deserves stronger sales.
Wouldn't that make worldwide sales near 500K? 
Hey! We're not talking about Susan Boyle... You can't say that when you're talking about CHRISTINA AGUILERA