I think Sony/LBP fans have to realize that LBP isn't quite the kind of game that's going to have massively, insane debut numbers, because it's a niche game.
Remember Braid? It's still around 200,000 units despite being hailed as one of the best platformers in ages.
How many Playstation 3 games have insane openings? Not many. Most games have decent legs, since the PS3 is selling at a very decent clip per week. LBP will sell well, but I think the major problem lies in how stupid (and rabid) the fanboys are. Just because a game (to you) is made of pure awesome doesn't mean that every other Playstation fan thinks so. Not even FFVII sold over 10m copies at a time that it was hailed to be *the* game.
LBP was set up for failure from Day-1. Not because of the game (which seems great). Not because sales are actually bad, but because Sony fans made it out to be some sort of game that was going to move 1,500,000 units first week.
Also, for the record (and someone help me out here): What's game, that's a new IP, has ever opened to over 1 million units worldwide? The only game I can think of that has ever come close would be Assassin's Creed at 1.3m, but between 2 systems, with the lead system (X360) at 861,000.
Back from the dead, I'm afraid.







