I'm not crazy about the site after really giving it a good look.
It's based on user reviews, which is highly subjective. One person who had ONE dog that didn't live up to standard gives it a rating of one star and it affects the rating of the breed as a whole. (Though not by much, I was hard pressed to find a breed that got any less than 5 stars). Most of the ratings are of course based on family pets, and who doesn't love their dog inspite of their flaws. Most people are not objective reviewers.