I just noticed that the 'stars' rating is incorrect distributed on one of my missions. And is thus much lower on the pages then it should be.
24 thumbs up and 1 thumb down results in a 3 star rating, while it should be a 4 star rating, almost 5 stars. And no I did not rate my own mission (obviously).
Unless there is some other algorithm that affects ratings I don't know about it seems like an error.
Mission I saw this error is: Silent Justice.