If someone was stupid enough to waste a 360 by throwing it away instead of getting a working one for free, shipping included then they are idiots. Are there 3 million such idiots among current 360 owners? I suspect not. Opinions may vary.
I object to your use of the word official. By that I take it you mean Sony's shipped numbers which are neither timely nor do they accurately reflect the number of consoles in use. There will always be more PS3s on shelves and in transit to their more extensive markets. They also seem to ship their holiday inventory earlier than M$ if past years indicate a trend. So late summer, early fall shipped figures would favour Sony.
Don't like VGC nos.? Feel free to start your own website. 'The Sony Shipping News' sounds catchy. Good luck but I'll stick with Brett and his intrepid band of prognosticators.
Sold is sold and if 21.6%* of PS3s are used solely as Bluray players then should we remove those from your little equation? How about people with multiple boxes, a category where the fanatical PS3 fanbase would far outstrip the more practical and sensible 360 crowd (read impoverished)?
Don't want to hear it? Well Congratulations then. By selling their plastic box at a loss from day one, losing more money than they made in their entire history selling gaming consoles and contributing to a state of impending financial collapse and shareholder revolt in the parent company, SCE has managed to possibly tie the plucky upstarts they had outsold by 117.2m* last gen. Woooot!
* All figures are strictly POMA and still probably more accurate than yours. Love to stay and chat but I've got Halo Anniversary, Skyrim and Dark Souls** to get through. Enjoy.
** That could happen! Third time lucky.