Some of WDW booking values as CRO is probably sleight of hand, a way to offer a steeper discount without overtly doing so.
My understanding is that WDW routinely overbooks rooms and makes “upgrades” as needed as a way to balance out their bookings. Just because WDW is offering access to a value room CRO doesn’t necessarily mean they plan to use that room.
And if they do, and you, as a
DVC member, are offered a 1BR Savanna over a value studio on arrival as a result, probably both you and WDW CRO would view that as a win.