JAWS (Jaffe WAR Score system), as explained by Baseball Reference, is a career-rating metric derived from, “…their career WAR averaged with their 7-year peak WAR.” This metric is particularly useful for evaluating Hall of Fame candidates from a historical perspective by enabling the game’s brightest stars to rise above the more ubiquitous, steady workmen. While WAR does an excellent job of telling you exactly how valuable a player was over the course of his career, averaging it against his WAR7 weights the number towards his peak performance.
Roger Maris’ Hall of Fame candidacy is a non-conversation from a WAR perspective, but he did post 14.