Expectations were so low for Biden, you sort of have to give the debate to him. POTUS needs to do some recalibrating before the next one, be more prepared to nail Biden with consise facts. He was a bit shotgun tonight, and didn't land as many shots as he could have.
Yes, he came off as petulant rather than as in command of the situation and the facts. Wallace didn't help, kept him off of his windup before the pitch.