The Daily Show’s Jon Stewart, in a special live post-debate show, struggled to defend Joe Biden’s debate performance against Donald Trump, telling the audience the president’s performance was “not great.” “We just watched what you watched,” Stewart said during the beginning of his monologue on Thursday. The Daily Show host noted the debate was a “highly-anticipated affair, according to the network that was running it,” before playing a brutal supercut of CNN’s own debate month-long countdown that billed it as an “historic” event. READ MORE: ‘Biden is getting pissed and I’m here for it’: Vetera…