Great point. Rodgers turns 3 or 4 sacks a game into small gains or huge plays. Manning or Brady would just lay down for a 5 yard loss in that case, whereas Rodgers can turn it into a 2 yard gain or a first down.
Manning and Brady tend to get the ball out alot quicker than Rodgers, so they still wouldn't take those same sacks alot of the time. Players like Rodgers, and even Big Ben can afford to hold onto the ball longer because they can extend the play with their legs.