In this video, Chris Wallace states that Biden’s behavior was exceptionally disrespectful and, in fact, was the worst he’s ever seen in presidential or vice presidential debate:
I have to say I think I have watched almost every presidential and vice presidential debate since the first four Kennedy-Nixon debates in 1960, and thinking back over the last few minutes I don’t believe I have ever seen a debate in which one participant was as openly disrespectful of the other as Biden was to Paul Ryan tonight.
And that’s what it was. You can talk about the smirks, the smiles, the head-shaking, the mugging. He was openly contemptuous and disrespectful.
Here the video of his comments: