Can I be banned, too? THESE NUMBERS SUCK!! LOL, J/K.
Seriously, though, I think it's pretty easy to deduce what happened. Considering there were some shortages of the PS3 (at least in America), Sony probably shipped a whole crap load at the end of December to keep up with demand, and then some. Now IDK about the PSP numbers, they could be wrong, or Sony and retailers may have just overestimated the demand for the Go.
Though I do have 2 criticisms (well actually they are suggestions) for the site.
1. Just for the new guys, there should be a small disclaimer below the bar graphs that states that these are sold to customer numbers.
2. For the more hardcore fans, there should be an article posted if the site is adjusted by more than a set number, say 250,000. It doesn't even need to be long or greatly detailed, just to quickly explain the adjustments.
I think that would greatly cut down on any, if not all, threads about this topic.
P.S. WE GOT GURLS ON THIS SITE...OMG!! Now I can stalk them like guys do on Home. And it will lead...NOWHERE!!