Do you have any examples of awesome restaurants that have poor ratings on Yelp? Assuming a sufficient number of reviews, Yelp ratings are at least "directionally accurate". In my experience, a place with four stars is decent and two stars is poor.

Many Asian restaurants in the Bay Area that I like are 3 or 3.5 stars, though many others with that rating are mediocre. But on the low or high end, it seems very accurate.