Pink Friday didn't push many sales until later weeks either.
I think that's all it is tbqh, people don't know a lot about the release.
It'll push more sales with more singles/promo.
Didn't PF actually work up to #1 like 2 months after its' release?
Irregardless, it has a set spot at #1, and will continue to sell with high numbers afterwards.
All y'all claiming Starships and the pop section of the album is harming the sales, I peacefully disagree.
They still are urban enough imo, you don't see Britney or Gaga spitting carefree raps on pop anthems.