No need for an argument, all the major manufacturers use the term 'sold' to refer to sold through to the retailers as for them that is indeed a sale. The retailer buys the console off of the manufacturer.
A lot of confusion comes from when Sony used to report figures that were to their own warehouses and hadn't actually been sold to a retailer, which they no longer do.
The manufacturers don't have 100% accurate sellthrough sales and so don't usually report them, merely commenting on people like NPD's reports.
At least thats my understanding of the business.