All Stewart did was crack wise ass remarks, which I agree he is very good at and is funny, even when taking swipes at liberals. Stewart never lets Goldberg complete a single thought without cutting him off using a wise ass remark for the sake of entertainment, which makes Goldberg's positions seem incomplete and broken. At which point, Stewart takes the liberty of saying his peace without the incessant interruption Goldberg is forced to deal with.
Stewart is like the forum moderator who participates in the debate while controlling the forum to the advantage of his side and to the detriment of the opposition. Humorous, yes, but principled it is not. Stewart didn't touch a thing Goldberg says because he never allows Goldberg to say his peace or explain his position without constant interruption and wise-ass upstaging, Goldberg being too classy to give Stewart a taste of his own medicine.