In my view Australia knew that taking BC out was the key and I think they spent a lot of time preparing for it and got him super early. What was apparent to me was how we reacted to that, there wasn't enough preparation mentally for what the plan was if BC went down quick. We just sort of .. gave up.
I agree that the all out approach got us to the final, so fair call he carried on, but failure to adapt was probably our undoing. Who knows...