Rishi Sunak’s fleet-footed performance at Prime Minister’s Questions exposed many of Keir Starmer’s shortcomings as Prime Minister. Sunak is the most effective opposition leader since Tony Blair and he mauled Sir Keir today with a blend of decent gags and wily tactics. The Tory leader has the advantage of resembling a human being, while Sir Keir seems as cold and lifeless as an oil drum.