Cook seems more explosive in traffic. Duke can slip arm tackles and is good with the straight arm whereas Cook seems able to escape from a crowd. Cook has a bigger frame, but coupled with decent speed. Once he slips the initial defensive surge, he is off to the races. FSU also has a good counterpunch with Karlos Williams. Gus Edwards should have played that role at UM, but doesn't have the same power and speed. I didn't see Yearby display Cook's abilities so far this year. Luck is also a factor, specifically Williams reeling in that tip by McCord in the FSU/Miami game. Or bad luck and panicky turnovers, like FSU today.