It's not so much the PS3 number that confuses me as it is the PSP number. Sony has said PSP is at 60.3 million. Do you seriously expect me to think that there are 7 million PSPs on shelves? Even if Sony stuffed the channel to ridiculous levels I can't see how that's even logistically possible to have that many out there. And don't say that it's the Go, a lot of retailers refused to even carry it and if there hasn't been a second shipment yet most of them have probably already sold. I have a feeling we're going to be seeing even more big adjustments after Sony's report comes in. I'm not saying that gfk, Chart track, or any of the other trackers are providing misleading information but their methods aren't infallible.
edit: @thesource Ah, I was under the impression Sony had leaked some of their numbers. Leo-j mentioned them earlier in the thread.