^lol not sure about that because the latest Music Station (i think that was 2010) update Ayu has 49m CD sales (even if you add Love songs, Ayumix 7, FIVE, and PQ, i don't think it had crossed 50m. maybe the release of ASB it would but not until now). here's the news bout that
http://aramatheydidnt.livejournal.com/1183452.html
maybe you're talking about worldwide sales lol cause in japan she's yet to cross 50m.
dvd's, well the record is not under Ayu's name anymore so it's really AKB who took it.