As others have noted, we have had some very lively discussions. But to respond directly to your remark, what's odd to me is that Obama allowed Romney to spend 90 minutes reversing every position he's ever taken and making wildly inaccurate statements that his campaign had to later admit were wrong, and never seriously challenged him.
I expected Obama to mention either the Romney campaign's Etch-a-Sketch comment (see below for those who don't know), or its statement that "we won't let our compaign be dictated by fact-checkers". These would have been perfect responses when Romney did a 180 on every issue during the debate.
No mention of the 47% or 30 straight months of private sector job growth. Unemployment now at 7.8% (and according to today's Gallup survey, it's actually even lower, at 7.3%), tax returns, shelters and havens etc. Romney's father released 10 years of tax returns when he was running for president, and Mitt demanded the same of Paul Ryan. Yet he's exempt from the same level of public disclosure, and Obama chose not to address the hypocrisy. There was an ideal opening when Romney said "I need a better accountant", but Obama somehow let it slide.
Romney keeps saying that 6 or 7 studies support his claim that his economic plan will not raise taxes on the middle class or add to the deficit. In fact, if you look up the "studies" he has cited, there's only one study (by Martin Feldstein). The rest are op-eds, blog posts and an article by Prof Feldstein summarizing his studies. AND Prof Feldstein has concluded that the only way Romney can cut taxes without raising the deficit by trillions is to eliminate deductions on child care, college tuition and mortgage interest, which amounts to a huge tax increase on people who depend on these provisions.
Romney said that Obama has failed to negotiate a single trade deal, which is demonstrably false. In fact, Obama concluded 3.
And on and on, ad nauseum. Romney set himself up to be exposed as a fatuous liar, and Obama failed to take advantage of this golden opportunity. He has only himself to blame for blowing it.
ETA: Almost forgot one of Romney's biggest whoppers (then again, there were so many, it's hard to remember them all.) He proclaimed that half of the green energy companies that received funding from the Obama administration went bankrupt. The actual figure is LESS THAN 1%, which is especially impressive considering the intense Chinese competition.
** the "fact-checker" comment (8/28/2012):
Mitt Romney's campaign said on Tuesday that its ads attacking President Obama's waiver policy on welfare have been its most effective to date. And while the spots have been roundly criticized as lacking any factual basis, the campaign said it didn't really care. "We're not going to let our campaign be dictated by fact-checkers," Romney pollster Neil Newhouse said at a panel organized by ABC News.
Truer words were never spoken.