I don't think anyone thinks Australia are going in as favourites, but you don't go to a WC without a plan of how to get out of the group stage. The Aussies would have planned for limiting the damage against France, pushing for a win against Tunisia and hoping to hold the Danes to a draw.
Planning for that, and actually realising it are 2 completely different things, but the comments were in relation to how they played against France. I have no doubt that they will be more attacking on Saturday, whether that results in a change of outcome, only time will tell, but at this stage, I would think most neutrals would expect Australia to finish bottom of the group, which in a way is good for Australia as they have little to lose by going for the win on Saturday.