It’s simple why C.J. Gardner-Johnson chose to play with the Buffalo Bills among his options through NFL free agency. He wants to win another Super Bowl. Gardner-Johnson claimed a Lombardi Trophy with the Philadelphia Eagles in 2022 and believes he has another chance to do so with the Bills. “I mean, being eight years in, won one, been in two conference championships,” he said to the media on Friday. “I think just really trying to compete for a championship.” What makes him so confident? Chicago Bears safety C.J. Gardner-Johnson (35) celebrates with defensive tackle Gervon Dexter Sr. (99) and defensive end Grady Jarrett (50) after a sack during the second half against the New York Giants at Soldier Field. | David Banks-Imagn Images Gardner-Johnson said during his introductory press conference that, while making the most money is always a motivating factor during the free-agency period, at this stage of his career, he is trying to build his legacy as a player who aided teams’ championship ascension.…