You don't make hundreds of millions of dollars buying and selling companies without being a slick salesman. Saying whatever you have to say to make "the sale". Fact-checkers be damned. The salesman doesn't care after he has your money... (Or vote.)
Romney's performance was welcome relief to Republicans after several weeks of poor performances and embarrassing gaffes. He was convincing, and his debate appearance revved up his own base. But did Romney convert any new voters? Will Americans support a candidate whose numbers do not add up?