The Ratings vs. Finished vs. Played has always looked a little off, but it's not broken. It works fine and is showing you an accurate count as far as how many times it has been Rated.
The Problem is that part of it updates immediately, part of it updates at the end of the day, and part of it gets erased every time you unpublish/re-publish. Also, if you Rate a game and then re-rate it later, it will account for both of your ratings in the overal Rating, but will only show you as having rated it once.
So, to summarize - it ain't broke. It's just quirky =)