What did you really expect for a Katy Perry album?
1) its an increase from Teenage Dream first week sales, an album that later when to sell 2.8 million in the USA alone
2) katy has longevity on her side
3) BTW debuted with 1mil+, however sold less that TD in the long run. It's not about the debut
I was beginning to worry with some members claims, we all know katy isn't the type that sells 40 % of their final numbers in their debut week, she's more about longevity .