I think you guys are forgetting that averages mean nothing on a grand scale....
Stats Can is to be taken with grain of salt. If you have 10 people, 1 makes 1 million and 9 make nothing, on average they make 100k each. Obviously that's not accurate, but something similar is going on in those markets.
I compile my own stats through raw data by using medians for real estate, stats can averages are just a good secondary citation.
Biggest misconception in the Toronto and vancouver market is that people own, majority rent. Therefore the household income has little to do with the affordability in correlation with home prices. Most people who own there bought years and years ago, and the people buying now, research suggests are using OPM to borrow for down payments mainly parents, or selling and moving up.
Most people are NOT investors, when they get a raise they say: We have an extra 1000/m coming in, that means we can afford a bigger house new car etc.
I think personal finance is important, but if everyone knew how to maximize there $, I can imagine there would be a lot less left on the table for us.