Thanks for the clarification - I didn't notice that (I need to read more carefully).
Having said that, that makes even less sense to me; they are saying on average, similar residential properties have increased 7.3% but overall residential properties have only increased 3.2%. Unless the 7.3% is really just a specific slice of the market (e.g. 8 year old, 4 bed, 3 bath with ensuite and 2 car garage) - those have gone up 7.3% but overall, the market is only up 3.2% so the rest of the residential market is not doing well. (From the description, I would have expected "Benchmark" to reflect the trend in multiple slices or categories of homes (e.g. consider 8 year old 4/3/2, 30 year old 3/2/1, new 3/3/2, etc).