The intent of the video IS to convince black men that Romney thinks they are stupid because he said that Obama is stupid.
I saw MSNBC playing the Sununu clip multiple times. It sounded fun at the time but he was responding to questions about the first debate which was short sighted.
John Sununu: Can You Imagine How Dumb This President Is?... This President Is Not Smart at All!
“MSNBC Host Shocked to Hear Romney Surrogate Call Obama Lazy and Detached,”
Almost verbatim what the University of Chicago professors said about Obama. They also inferred that he was dumb : )