Also, he brought up Afghanistan on his own in response to the 'hardest decision' question. That's not exactly a fluff answer.
Questions about the state of Iraq, Syria, Libya, Iran, Egypt, et al would have been more interesting. Characterizing sending more troops as a hard decision is not too surprising.
That said, he did come about as close as he could to acknowledging the surge in Afghanistan didn't accomplish much. And he called for a constitutional amendment on Citizen's United, which he apparently hadn't done in public before (according to news outlets trumpeting it).