pretty sure TD sold more than BTW because of it's re-release and Loud did 8M according to Rih's receipts so it's somewhere in between both therefore 7.6M is the estimate now
Honestly I am surprised by the numbers Michael Buble pulls. Maybe it's because I've never listened to one of his songs. I just don't know anybody who is an open fan
That says more about your friends circle than Buble.