Because there have been those same defaults in 4S with auction dates in 2007, 2008, 2009, 2010, 2011 and here we are in 2012.
If the tsunami did not hit then, why would it hit now in the face of a stronger effort to halt them? This is not to say there have not been foreclosures and short sales in 4S, however if you think there will be enough inventory to produce a substantial price movement… well I would disagree for that 2500 to 3000 sf home demo.