Aug. 25, 1962 - The experts are virtually unanimous in believing that the Green Bay Packers, the 1962 league champions by virtue of their crushing 37-0 defeat of the New York Giants last Dec. 31, again will capture the title. Coach Vince Lombardi retains all his key personnel from 1961, won’t have to compete with the Army for the services of Paul Hornung, Boyd Dowler, and Ray Nitschke, and has added gifted rookies. Baltimore and Detroit appear to be the chief threats to Green Bay. The Colts have a dynamic attack, led by Johnny Unitas, whose injured throwing hand of 1961 is sound again; Lenny Moore, and Ray Berry. The Lions have a sturdy defense and, with Milt Plum installed at quarterback, figure to have a sharper passing game. Chicago, which made important 1961 additions in Bill Wade and Mike Ditka; San Francisco, which has abandoned the shotgun attack in favor of the orthodox pro T; and Los Angeles, which has a prize crop of rookies, will provide additional divisional pressure on the Packers.