Well I try to get a better PR so I can better sell links, but I just don't understand PR sometimes. I have had pages that were empty or not the best quality and have decent to high PR, but I had pages that I worked hard on and get no to low PR.
Well, I'd rather not connect very high PR with good results in serps, but line of idea seems to be pointing right direction.
That is true some keywords the top ranking site has only a PR4 or PR5 nothing impressive and that was the whole idea is to show people that they are interconnected and one affects the other.