Because if you are ranking well (not just talking about appearing in the serps - talking about page 1/2 - 'WELL') you're pages are obviously well written, compliant in Google, receiving links/pagerank, and will eventually display a pagerank on the 'foolbar'
If you know so much about it, why were you asking the question in the first place? I know rankings and pagerank have nothing to do with each other - they are completley seperate algorithms. PageRank algorithm is leased from Stanford University and the Ranking/Quality algorithms use several hundred factors in their calculations which they file dozens of patents for every year to improve.
Quote:
Originally Posted by ddwebguru  PR of a website does not have anything to do with the ranking of that website. It depends on the quality of links, quality of content and other associated factors. |
PageRank calculation has nothing to do with quality of content - it's on a completley seperate algorithm, you think it cares about your content/words etc?? It is a link graph score, but a hell of a complex one with billions of pages to calculate. It's the ranking/quality algorithms (Googlebot) that look at your content, and decide if you are duplicating, linking out to bad sites etc
The only way to get a pagerank 'high' is to achieve links from pages with either equal to, or greater than the pagerank you wish to achieve. That's the formula I've stuck to for a long time and it's proved true for me. E.g. generally speaking you'll need a link from a PR7 to get a PR6. If you want high pagerank go and get some high pagerank links! You could have a pr6 if you get a couple of pr6/pr7 links (depending on the number of outbounds) - but as you and I know, it won't help your rankings one bit as it's keyword inspecific - it doesn't look at words.
Back to your original question which was 'which is more important pagerank or alexa' - you don't need to worry about either?? Get the rankings for your site(s) a simple call to action/point of sale and you'll make money?