Marvin was relentless and always busy and working. He was never just sitting there with the exception of the Duran fight where he expected an aggressive Duran. That was his only glitch in all his fights. Duran was just a fighter he never expected to fight. But I think that Marvin had a 4th gear and usually fought in 4th . He did not have many different gears. When he fought Hearns he fought in 6th gear. But I think he was just a very determined and sharp fighter who knew his craft and I think he would have outworked Jones and stopped him. Jones never fought a guy as good as Hagler really, and Hagler fought a few guys as good as Jones