Uh, the way I read it the interviewer took Finkelstein apart, confirming the figure of 2,000-3,000 Palestinian Arabs allegedly expelled by Jewish forces during the Israeli War of Independence because those Arabs lived in sensitive military areas (right near the runways of the main airport). By contrast, 200,000-300,000 Arabs left because they didn't want to live in a Jewish-majority state. Of course, there was a parallel movement of Jews from the Arab-majority areas into the Jewish-majority areas, and few of those Jews moved for any other reason than fear of massacres. This is the story which Finkelstein tried to take apart by quoting Benny Morris, another fellow who, like Finkelstein, is an anti-Zionist Jew.
Further confusing the debate is that fact that Morris, like Dershowitz, has been moving rightward and no longer endorses the 2,000-3,000 figure, much less Finkelstein's 200,000-300,000. How could this confused mess possibly be construed as one in which Deshowitz was taken apart?