It's not an excuse. It's a fact that we don't have the depth in defence to play better ball users.So close to getting through without an injury excuse. I've tidied it up for you.
Collingwood scored majority of their goals from turnovers and Essendon's main scoring source was from stoppages. Better ball users in defence means less turnovers and less opportunity for Collingwood to score from turnovers.
Of course that's all hypothetical so I'll take the 2 points.