Look I'm no Biden fan, but when that debate was over I thought Biden won. When the poll results came in my mouth dropped. I sat their scratching my head for a while.
Then slowly the rationale started coming out. Women! The story of the night is that women felt that he had gone so, so, so far overboard in his behavior that they couldn't stand it which resulted in a bit of a stalemate.
I wouldn't think that women would have seen things so completely differently than I did. Apparently they did see it differently and this site is basically one large sausage fest. That could be your answer as to why your seeing some GOP posters saying that Biden won on here, but a different result outside of here.
The apparent conclusion to draw from this: A few interruptions = net bonus. Go overboard with that and add some condescension and women apparently think you're an A-hole(but less so men). Learn something new everyday. They'll probably be some obscure manual/book written by a consultant about this and disseminated to the all the political consultancy firms for a high price after this election. Hell it may even quantity the exact amount of interruptions one should engage in(focus group tested of course) and how many seconds of condescension a politician should practice in a single debate.
PS: If women really did dislike Biden's performance a lot than under the surface that's a little bit rough for Dems. That would mean that they have turned in 2 debate performances that women disliked.
Come to think of it, this seems possible, although most of the women in my life, who tend to be what was referred to as 'brassy' back when people called women 'brassy', didn't have this reaction. A little depressing, because 'tone arguments' are almost always depressing, but possible.