I recommend reading the summary but not watching the video. It was a publicity stunt, not a real adversarial debate. They agreed on almost everything.
Four years later, have Libertarian Party candidate Gary Johnson and/or Green Party candidate Jill Stein shown any evidence of accumulating ANY new knowledge or understanding of current issues facing Real Americans? From GJ not bothering to know the name of even a single world leader (has anyone asked him what OUR President's name is) to JS spending most of her time spraying graffiti in defense of citizens of a foreign country I have to think neither really wants to lead anyone.