I don't understand what is difficult to figure out here. I own a PS3 and LBP. So there's ONE PS3 sold and ONE copy of LBP sold.
I have TWO PSN accounts, one for me and one for my wife. When I play LBP online we're logged in as me and she can join my session sans PSN profile. However, if she started playing LBP first then I'll just join in ad hoc while we're playing online with her PSN profile.
Anyway you slice it, that's two PSN IDs for one copy of the game and one console. I am certain the average PS3 owner has more than one PSN account -- a certainty for multiuse households, -- and the number is probably even closer to 3:1 or 4:1 after factoring abandoned accounts.
Sony would not deliberately announce a smaller number or convolute the matter with the unclear statistics. Sony would simply use the largest, most impressive number available, and that means LBP sold, according to Sony, 1.3M copies.
I don't know why people go around in circles trying to defend VGChartz when this happens (and it wouldn't be the first time). It's not the end of the world.
