Something is not right here. How could Gaga sell more than Katy the first three weeks if Roar has been doing better the whole time? And what countries are included?
75% of the sales come from the UK and Roar wasn't available in the UK until last week
could it be just the difference in tracking week?
maybe this chart tracks from Sunday till Saturday.
That 1 day difference (from the UK charts) could explain why the 4th week isn't even above 179K
