This was Johnny Cueto as advertised, as needed, as fervently hoped for by the Kansas City Royals. Cueto’s short tenure with the Royals has been mercurial, up and down, erratic, if you like. But Wednesday night in Game 2 of the World Series against the New York Mets, he was the ace the Royals believed they had traded for before the July 31 non-waiver Trade Deadline.