Hes not a power back but he "breaks" tackles using his quickness in space, so tackles wind up being arm tackles. Hes had plenty of long runs and he's been one broken tackle away from taking it to the house on numerous occasions.
Brady is thankfully more committed to the run game than Dorsey. But to me the run blocking scheme seems to have changed (for the better). I wonder whether Kromer and Dorsey were on the same page. The line now is looking to pick up blocks at the second level from the snap and letting the running backs (esp Cook) hang back and use their vision to pick their way. This favours Cook's game because of the suddenness of his moves in space. Good for the Jets reject too.
Ive been really impressed with McGovern's mobility at LG.