McDonald’s Corp. (NYSE:MCD) rival Wendy's Co. (NASDAQ:WEN) is facing an acute slide in its operational health, as reflected by a major drop in its quality ranking, even while it continues to offer one of the industry's highest dividend yields at 6.21%.Check out WEN’s stock price over here. Wendy's Hits The Lowest Rung In Quality ScoreThe company now finds itself in the bottom 10th percentile of U.S.-listed stocks on the latest quality score by Benzinga Edge Stock Rankings, signaling a significant deteriorat ...