As a matter of performance, this was as one-sided a win for Obama as the first debate was a one-sided embarrassment for him. Romney's ill-at-easeness on nearly every subject that came up was palpable, as was Obama's barely-contained certainty…. As a matter of substance, it was depressing in principle that this was the level of presidential-campaign discussion…. But it was more striking as a matter of substance that on virtually no issue did Romney make an actual criticism, of any sort, of Obama's policy or record. Including topics where he used to disagree, like the timeline for withdrawal for Afghanistan! Instead it was, "I agree, but you could have done it better."… I know that Obama did very well this evening, and Romney put up his worst showing.