You may have noticed the new plug in that shows number of readers for each post. It doesn't track RSS readers, or people who open the main page and scan a post without clicking on it. It's not a detailed stats provider (which I already have in the form of mint that shows me behind the scenes, who is reading my site, with what browser/RSS reader and from which part of the world etc).
The 'reads' plug in is more a visual feedback for people visiting the site to get some sense of which posts are generating the most interaction. Comments of course are one measure of a post, but often the most read posts, have few comments.