"First of all, the sequester is not something I proposed, it's something that Congress proposed. It will not happen."Whoa. If the sequester will not happen, what will?
That's a huge statement with no clarification of what he means by it. And Obama seems to have gotten away with it... as he should considering the precedent set by Romney and his definitive statements about the deficit and cutting government by attrition during the first debate. Romney was been getting away with not explaining these claims and for the lack of detail his tax plan and his economic growth plan. So it's only fair that Obama gets a pass on his sequester claim.
How will Obama keep the sequester from happening? Well, duh, they'll start negotiating right after the election, of course! The talks are obviously not going to start before the election. Obama could add that they'll also start negotiating the changes to the Bush tax cuts after the election too.
Do I need Obama to be anymore specific than that? Not really. By now I generally know his bargaining position. Getting too detailed could cost him some votes that he'll need, and Lord knows neither candidate is going to blow those votes at this point. Not Romney, not Obama. This doesn't make them equivalent in their vagueness, but it levels the playing field a bit.