Confidence and belief can be an explosive cocktail when possessed by the Wallabies. The danger levels rise significantly when the man at the helm has a proven track record of managing campaigns and getting his team to peak at the right time.
Robbie Deans is now most definitely the enemy. Australia are the team the All Blacks have to fear the most; the team best equipped to beat them at the World Cup. South Africa and England are the knockout kings; the champions of conservative rugby who can grind out results on big occasions. But the All Blacks will be less worried about those two than the Wallabies.
The All Blacks know what they will get with the Boks. They can prepare, strategise and stand up to them should they meet in the semi-final as scheduled. England are much the same, but not so Australia. They are the only team that can play the All Blacks at their own game - high tempo, ball-in-hand rugby built on turnover possession and the use of clever running lines.
Of particular concern is gauging how much more the Wallabies have to come. Some Kiwis will try to find solace in Deans' patchy record since he took over in 2008. There have been defeats to Scotland and Samoa, a draw with Ireland and 10 painful consecutive losses to the All Blacks. Under Deans, the Wallabies have only won 56 per cent of their tests. It's hardly convincing but the clever thing about Deans is that he has treated his four-year tenure as a campaign.
He was hired with the goal of coaching the Wallabies to World Cup victory in 2011. While everyone else has lived in the present, Deans has carefully plotted his way to this point. The Wallabies are infinitely better now than they were in 2008 and the worry is they have unstoppable momentum and a team, a bit like the All Blacks of 2005, who only have to turn up and breathtaking rugby will magically be produced.