I completely agree with you about that sth like most of all time can't be measured and we should settle on Elvis and Michael (also Buddha, Jesus and Mohammad for that matter) being one of the most famous people on the planet. Well, I just thought Michael Jackson is a more popular household name than Elvis, and it's credit goes to the better media on MJ's time too. Elvis' album might have better sales, but I would say more people knew about Michael Jackson (because of his dance too, as dance penetrates language barrier easily than songs)..About album sales/hits, for eg, 1 billion people in India might know about MJ and 500 million but might buy only 1 million copy, whereas 300 million people in US (who both know MJ and Elvis) might buy 30 million copies of Elvis and 20 million copies of MJ..these are imaginary figures and I just used them to point out flaw in your logic..album sales tell little about being widely known..