I will say this again that statement is a reference to the size or our rb's and nothing else.
In high school football how often does a player have to tackle a 240lbs+ RB? Now think about the challenge of having to play against 2 big backs at the same time.
I'm sorry you don't get to hangout with Lawnboy, but like he said "Barnes and Abernathy.......they are grown men playing against boys."