tedster - 6:53 pm on Sep 3, 2012 (gmt 0)
Agreed. PR is essentially about link popularity, and the original formula has been tweaked over the years. It now probably include factors like the quality and page position of the link, not just a raw link count.
When you're comparing PageRank values, always keep in mind that the scale is not linear. The difference between a PR 3 and 4 is a LOT less than the jump from PR 4 to 5... and that kind of difference goes all the way up the scale.