It's simple.

During that 90 minutes, Mitt Romney directly contradicted himself on past statements in debates and on the campaign trail with nearly every sentence out of his mouth.

The Obama campaign now has all of the material it needs for every ad from now until November 6. After 90 minutes of Romney prevarication, every last statement can be played in an ad followed up by a directly contradictory statement either from a GOP primary debate or from a stump speech.

Obama's performance tonight had nothing to do with putting points on the board.

Obama's performance tonight was all about letting 50 million Americans watch Mitt Romney's convincing language speak for itself so that it can be placed directly opposite of Mitt Romney stating the exact opposite of what he said in the debate.

50 million Americans will now see Mitt Romney's beautiful statements from tonight's debate be directly refuted by none other than Mitt Romney.

IMO, this was the most brilliant performance of using a debate for pure political advantage in the history of American presidential politics.