I just wanted to bring up the possibility of Sony reporting their 'shipped' figures differently. I have seen it discussed in other sales threads and it definitely helps to explain the discrepancy between their shipped totals and VGChartz sell-through numbers. It's the theory that Sony count back-orders on their books before shipping to retailers. Of course I don't think anyone that doesn't work at Sony will be able to confirm or deny this, but when you see reasoning to argue towards higher sell-through data such as; "they've shipped 2.5 million units and I can't find one at my local retailer" I always think of this as a possibility.