Nobody is saying that size isn't a factor in rebounding, but it plays less of a factor the further away from the basket the ball goes off a shot. You seem hell bent on making everything into a size issue for NU and how it will be a factor in the Big Ten. Yes, it will be a factor, but let's not act like the Big Ten is full of teams with nothing but giants on the floor.
I expect size to be even a lesser issue in college basketball going forward, as the NBA will probably go back to allowing high school kids. That will reduce the number of true bigs in college basketball, as they will go right to the NBA.