Commercial real estate - a dream short?

Below is a chart of the Down Jones U.S. Commercial real estate index ($DJUSRE) with a superimposed plot of the Dow Jones U.S. Homebuilder's index ($DJUSHB):These charts so far look nearly identical with a phase shift. The homebuilder stocks peaked in 2005 and have tanked since (down as much as 75-80)%, while commercial real estate didn't peak until 2007. I circled the "dream" segment of a leg