around, in most places, they are the BIG KID on campus literally, they haven't had to use, or been taught much technique except from likely HS has-beens...
So, they come to BYU, they are forced to work hard in the weight room, all of a sudden they are learning basic blocking, and trying to push people around who are just as big as they are, but much more athletic than the average competition they have faced.
At least a couple rugby players come with the background of playing with other big boys, and knocking heads (quite literally)... I'd take guys this size all day.