Much like the Madden NFL and NHL series, WWE video games have a tendency to suffer from “incremental-itis.”  This little-known (because I just made it up) affliction affects games with annual iterations, and results from repeated new versions of a game that feature tiny, incremental improvements instead of sweeping changes.  Despite the disease’s minor effect on games’ review scores, it doesn’t seem to have any detrimental consequences from a financial standpoint.  WWE Smackdown vs. Raw 2010 is certainly a carrier of the disease, but there are enough new features and improvements to suggest a better prognosis for the future.