He's the Alvin Greene of 2010.
C'mon, he's definitely no Alvin Greene. Greene is inarticulate and almost certainly either borderline retarded or drugged to the gills; he got votes only because people hated the Democrats they actually knew anything about. (And if you only heard about him and didn't hear, well, HIM, an honorably discharged veteran makes an attractive candidate.)
Herman Cain is the antithesis of that. He is articulate and highly intelligent, with a track record of proven success in business as well as being a former regional head of the Federal Reserve, an organization not exactly known for affirmative action. A demonstrated mastery of business and finance is not exactly chump change in the political field. It's head and shoulders above someone whose business acumen consisted of suggesting that he be made into an action figure. It's head and TOES above it. Cain has literally nothing in common with Greene except a surfeit of melanin and African features.