articleWendy’s has lost its place as America’s runner-up to McDonald's, ending a six-year run as the second-largest burger chain, being surpassed by a resurgent Burger King. BURGER KING UNVEILS 'WHOPPER GUARANTEE' WITH FREE BURGER IF ORDER MISSES THE MARK"Our traffic, our value proposition and franchisee economics are not meeting our expectations. McDonald’s remains the dominant U.S. burger chain by a wide margin, leaving Burger King and Wendy’s fighting for a distant second place. Wendy’s had surpassed Burger King roughly six years ago, helped by the successful nationwide rollout of its breakfast menu. BURGER KING'S IMPOSSIBLE WHOPPER TO HIT MENUS ACROSS THE USMore recently, Burger King has focused on its signature Whopper.