Well, if you read around a bit all the pundits claim that Romney was aggressive and Obama was tired. As I just said this is style and not substance. You shouldn't vote based on who can communicate his ideas better but based on what ideas you prefer independent of how well the guy can sell it. You want the best POTUS, not the best salesman in the White House.
Listening to politicians is one of the worst ways to inform oneself about them. America is full of brilliant journalists who point out what actually happens beneath the PR screen that political parties and candidates establish around them.