There are lots of ways to play with the numbers, and a never ending list of assumptions/scenarios one could play out.
According to those statistics, roughly 40% of SD has a HHI of over $75k. As debated in another thread, at that price range you can save for a $60k DP in just a few years (depending on lifestyle). If parents help out, much faster.
I believe the new average marriage age is somewhere around 26-27 for women and closer to 30 for men; younger in the bible belt/etc.
My whole argument was that a lot of young people are making good money. A large # of these people have been priced out, or simply were not on the market the last 7-10 years. To say that there is no demand, or no money on the sidelines in this age group is very short sighted IMHO.