Biden did better than the President. But that's to be expected. Biden's the better man. We'll have to wait a bit to see how it played with voters, but there's no doubt in my mind he did better than President Obama did.
Of course, we'll also have to see how many people watched it, and how much they like people interrupting and yelling. Maybe that sells. We'll see soon enough.
UPDATE: A CNN undecided voter interview.
The lady is from Virginia, which might explain her good sense.