Leave off mate, are yout trying to do TPN out of a job?
Looking at Gaggers excellent article on the front page and how surprisingly good McCalman's stats are, I wonder if he suffers a bit from "PoCloak". Even as Force supporter I tend to miss alot of Bennys work because I am quite often watching Pocock to see what he is doing and don't notice the work McCalman is doing. While the same could be said of Mowen and Hooper, the Force really only have one trick, and it's called David Pocock.
I would assume Deans and Co are watching alot of tape and specifically watching individual players to judge the effectiveness of their involvements (unlike myself and most others commenting). For them to have included him, he must be doing something right.