@Morose Thats because its not using a 1-5 scale, but a Michelin star 1-3 scale. 1 in this case is already above average, meaning you are worth looking into, and 3 stars is a coveted reputation that only the best of the best get and maintain. If you don't get a star rating, you either haven't been checked or weren't worth it. For the record, there's only 137 resturaunts with a 3 star rating in the entire world, so that should tell you how prestigious it is. Getting even one Michelin star raises a restaurants reputation, and getting 3 plants you firmly as the cream of the crop.
This entire side series is basically "What if Michelin's tour book guide was run by a rabbit girl who's special ability was evaluation"
Also not aimed at you, but where's 28? It seems to have been skipped.