Just my opinion...but I think the downfall of the Shula era was blind loyalty to Marino, and the fact that the entire team was built around his skills. To some degree, this ignored the importance of defense. To a very large degree, this ignored the running game. This combination cost Marino his ring. Had he not been so self-centered, the Dolphins could have pulled one out. That said, yes...in terms of raw talent, he is one of the best ever.