I don't see how he could possibly have given his reasons for supporting Obama and not his long time good friend, McCain, without pointing out the factors that lead to his making that decision. He made no gratuitous criticisms. He listed all of the factors that lead to his making the decision to support for Obama. He also had a lot of good things to say about McCain as well. He said several times that McCain would be a good president. But after listing the concerns he had about the McCain campaign and McCain's selection for vice president, he showed that the reasons he had for endorsing Obama were greater and more compelling than for McCain, and the reasons for not voting for McCain were greater and more compelling than those for not voting for Obama.