My Gawd! The man is on a different Planet
In fairness to Clark (I know), he was responding to Chrissy's hyperventilating question if he didn't think Carter would have been a good choice and why wasn't Carter chosen, did Bush dis him or something?
If you're familiar with Matthews' interview technique you'll get the gist. Clark basically just agreed. He did not pull Carter out of thin air.
He did come up with the President of the U.S. is also leader of the world all on his own, though.