Well, nobody self destructed. Everybody did well except the CNBC moderators who were terrible, half way thru the candidates started chewing out the CNBC people. The opening question "What is your biggest weakness" is an old goofy job interview question intended to shake up a less than quick thinking applicant. These guys are all pretty quick thinking and smoothly sequed into what ever they wanted to say. Everyone made a clear distinction between them and the Dems.
Having people over makes the thing more watchable, keeps you awake, Need to do that more often.