I don't think he answered it. He basically avoided the question as expected. Not that I have anything against Cutts. There are probably things he can and cannot say or maybe he doesn't know.
That being said, he probably answered the question as well as he can or wants to. It's pointless to nitpick.
We can paraphrase that to: "Yes. I am saying that +1s make no difference in Google rankings."
The wonderful thing about the English language is that there are often many ways of saying the same thing.