LOL, try again, PR has lots to do with SERPS, not as much but still plays a very significant roll. Best you start reading matt cutts blog!
Maybe you should read. Or do a search and see how many sites you will find higher in serps with lower PR. I have a site that is PR0 and is above a PR6 site for my term. http://forums.digitalpoint.com/showthread.php?t=185946 http://www.articlerouter.com/2009/10/is-pagerank-pr-affect-serp-and-traffic.html http://forums.seochat.com/google-page-rank-47/will-a-drop-in-pr-affect-my-serp-205386.html need I post more...?