This will never be accurate either, as app developers will get some head start (they will receive them earlier then a regular user), completely taking the order, out of order.
Not to mention the amount of Cancelled orders (users that ordered the Pro several times, by “accident” because the store couldn’t handle it) is pretty big too.
And depending on the amount of devices send out in batches (Athom did receive more orders then they expected, as expected) there can be a large (weeks, or maybe even months?) timespan in between batches.
