Wii doesn't need a lineup..they're hard to find right now. Wait til people want to give them as gifts.
You're right that the 360 doesn't have AS GOOD of a game lineup, but it still has a decent one. And it's $200. People will take the $200 they save by buying a 360 over a PS3 and buy 3 games with it.
I wish things looked better..but the PS3 has to have a pricecut in my opinion.