The reason I choose unsustainable success is because, for the most part, particular key players have been unable to produce consistently productive seasons, including Weeks, Hart, SS, 3rd base, pitching, and so forth. Key pitchers have been either unretainable (Greinke, Sabathia) or unsustainable (Marcum, Wolf, Fiers, Hoffman, Axford). The 2 unremarkable seasons were not tremendously successful statistically either and certainly would not be put in the success category, i.e. more years of non-success than success. So we really only see a couple years of spikes, which quickly regresses for the next couple years.