I doubt it. Only a rare couple of games are first week system sellers (GTA, Halo, MGS, FF, GT), while lots of good games contribute to a system's sales in the long run, they just aren't trackable in sales statistics.
Maybe Uncharted 2 could lifte the Slim sales by 20-20K, but it's hardly noticeable in the weekly variation in sales. Plus we could get well over 250K for PS3 anyway cos we're going into the pre-christmas lucrative season. October is always a great month in console sales.







