Anyone who harbored doubts about President Obama's ability (and/or willingness) to take on Mitt Romney at the 2nd debate had those doubts washed away in the first 15 minutes. The president relentlessly pointed out the lies in Romney's statements and lack of specifics in his platforms. Romney's frustration was palpable, and desperation pushed him to be rude and overtly aggressive to the moderator and the President.
In fact, it wasn't so much about the good points that President Obama made - there were no real surprises there. The debate seemed to be more about how badly Mitt Romney did. President Obama came prepared to compare his record and plans against Romney's and Romney didn't like it. As the evening wore on, Romney became more desperate and frustrated, and it showed. He interrupted and disrespected both the moderator (Candy Crowley) and Obama. The end result was a contrast between a cool and collected president and a jackass.