Chuck Carlton, Big 12 beat writer for SportsDayDFW.com and The Dallas Morning News, answered questions about the league during a recent live chat. Here are some highlights:Why all this Heisman buzz for Kyler Murray if Oklahoma hasn't really played a legitimate opponent yet?I would disagree with the premise. Florida Atlantic was supposed to be a very good "group of five" member and no one expected UCLA to be ineffective under Chip Kelly.