By Chris Rosvoglou On Thursday morning, Pittsburgh Steelers quarterback Ben Roethlisberger officially announced his retirement from the NFL. While plenty of analysts are celebrating his career this afternoon, FOX Sports radio host Colin Cowherd has decided to go a different route. During the latest edition of The Herd, Cowherd stated his case as to why he believes the end of Roethlisberger’s career was “bumpy” and “underachieving.” “Name the last time Big Ben won a big playoff game out-dueling another quarterback,” Cowherd said. “Google it – we did. Keep looking. It’s 12 years ago, Joe Flacco …