Are you under the mistaken impression that the stars awarded to airlines are based on actual passenger feedback?

Please note:

Airline Star Ranking is not based on customer feedback or reviews, but detailed Audit analysis that ensures every airline is guaranteed a fair and independent approach. Ratings look at all areas of an airline's airport and onboard product and service standards, and this is applied across all cabin types, be they short, medium or long haul. Within the Star Ranking criteria, there are key requirements that will determine a final ranking level, and these govern key product areas such as seat standards and inflight entertainment.

http://www.airlinequality.com/StarRanking/ranking.htm