It might seem logical that more Web pages would equal higher rankings (at least in a roundabout way) but that's apparently not the case according to a new video from Google's Matt Cutts.
Cutts essentially explains (within the video below) that the more pages a website has, the more 'chances' it has to rank for different keywords. In addition, the more pages that are present, the more likely that links and PageRank are present, which do directly impact rankings. In short, "just having a number of pages doesn't give you a boost," said Cutts.