Why not? The Nintendo and Microsoft numbers are straight from the companies, and the source on the Sony number seems legit as well.
Sucks for Will, about the appendectomy. More time in the hospital! Get well soon.
The PS3 is a couple million short of 77 because Sony started including PS2 and PS3 shipments together recently, so that 77 million figure includes some PS2s. But the PS3 and 360 are pretty much neck and neck now (despite launching 12-16 months later) which is what Will actually ended up saying. It was the other two who couldn't quite believe it.
I hope Will gets better soon. I wonder if he and Patrick will be in the same hospital for their surgeries.