That's a good example of another factor that I think was important...the reaction of the supporters of the respective "losers" of each debate. Liberals witnessing Obama's loss in the first debate came right out and admitted he got creamed, then turned to introspective despondency trying to figure out why his performance was so bad. Eventually some liberal pundits suggested Obama was right on the facts but made a poor presentation of them, and overall the theme was that he sure as hell better step up his game in the next two debates.
Conservative reaction to the second debate was...different. Almost immediately is turned into whining about the moderator, whining about the media, whining about Obama being mean (did any of those people pay attention when Romney was talking?), whining about the questions, basically doing everything possible to avoid admitting that Obama got the better of Romney in their second exchange.
Not everyone fit into either category, but the overall reaction seemed to follow that pattern for sure.