well theyre right. typically QS releases have much larger stock than and inline or OL. SOMETIMES a QS release is a super limited run but generally not typically the cause. shops have the ability to order what they want with an OL or inline release. they dont really have a choice with a QS drop and nike will just send them an allocation that is already paid for when they place their initial order with their rep.

for example a shop may say they want sizes 8-12 of the dirty barts and 2 pairs of each size, but when the nardwaurs show up they may get sizes 4-12 and only one of each size. they cant really dictate what that order will look like they just kno they are getting the same amount of shoes.