They must have major sample bias to rank Orinda below Rockridge.
We're using price per square foot. We are a member of the MLS, so we have every home and condo for sale. You know what looks crazy? Not factoring in size. We did it and it looked really goofy. (I'm the founder of Estately)
Price per square foot tends to goes down as square footage goes up.
(For example, a 1700 sq ft home in mountain view will cost you 2 mil. A 3400sq ft one in the same place will cost ~3 mil, not 4 mil).