i'm going to have to agree with twesterm.
as a game i think this looks awesome. i personally would love to play this game, however, i can't. why? because, as my taste include very cute and simple games like this and therefore i bought a wii. this game has casual audience written all over it and i don't think the ps3 can support it (to a financial success).
games that are selling best on the ps3: Assassins creed, CoD4, PES 2008, Resistance, and other "hardcore" games - and audience that for the most part won't care about LBP.
Ratchet and clank is probably the more comparable game currently out on the ps3 (in terms of audience appeal) and it didn't do great, 635k after 11 weeks of which included huge holiday sales. AND, Ratchet and clank benefited from being a proven IP which LBP doesn't have.
in the end, i think LBP is going to be a great game to play but that sales are going to be disappointing. it's a casual game on a system that doesn't have many casuals.
