Didn't Mary release her album on a Monday? The cut off for the charts is Tuesday of each week. If so, she only had one day before her "weekly" sales were reported. This happened to Destiny's Child when they released "Destiny Fulfilled." They released it on a Monday and only had one day of sales before the weekly deadline. The album debut on the charts at like #28 or something. The following week (after they had a full sales week), they were #2. Either way, what Mary has sold so far with this album is still respectable in this particular climate.