So if I read this right the site's saying 507 K by NPD however this includes sales not estimated by the site as per this comment in the analysis from The Source:
"Michael Pachter did tell me in email however that much of the X360 year over year rise came from a) free X360s given away with Windows 7, and b) X360s sold directly to distributors (some of these units apparently ended up in Brazil) - and Microsoft convinced NPD to count both. Pachter didn't have figures on how many units those promotions added, but estimates that X360 would have dropped slightly year over year (-5% to -10%) without those inclusions."
Where does this put the site's initial estimates? Okay as they didn't see those sales through their polling methods or still under tracking 360?
I thought freebies, etc. went on for all consoles fairly regularly but The Source seems to implying this was a much bigger impact than usual.
Even if this somewhat downplays the 507 K it seems like the 360 still did the best overall even if you discount the noted units from the total. -5% at retail compared to the others is pretty good for the region.
Oh, most definitely. Only a 5% drop is extremely impressive considering the numbers it was putting up last year. As far as YOY performance is concerned the stuff MS is pulling off this late into the generation is breaking all sorts of precedents.