Sportal.co.nz 14.Oct.2013Getty Images
New Zealand won 40-19 for their first win in three finals at Skilled Park.
Ambrose Curtis scored two tries with Tomasi Cama, David Raikuna, Waisake Naholo and Joe Webber also touching down.
"It is great, third tournament in a row but that was pretty tough," coach Gordon Tietjens said.
"Australia acquitted themselves really well considering they had a pretty tough semi-final that went to a lot of extra time – they must have been tiring but [it was] a gutsy performance from them. Even England, we had a great day yesterday, we only conceded one try up until the semi-final and had gone well.
"Perhaps we came out a little bit complacent against Australia and they came out really hungry and they had two tries on us before we realised we were in the game. We fought back pretty well and scored a couple of good tries out wide and then we persevered and got more than we wanted." he said.
Australia held possession for long periods and that had been a challenge, however, the win was a good start and a great way to begin their world series defence, he said.
Overcoming the issues in winning at the ground was down to having a much more experienced side this time around. Last year the side was so inexperienced Tietjens had been surprised to make the final.
Australian coach Michael O'Connor said: "I think the team did exceptionally well over the weekend.
"To get in the final under the circumstances in the semi against South Africa was great.
"It's the best result we've had while I have been coaching in a first tournament, so we start with season with a good positive start," he said.
New Zealand beat England 14-5 in the semi-final while earlier in their quarter-final match New Zealand beat Samoa 40-0.
Australia beat South Africa 24-19 in their semi-final having beaten Kenya 24-12 in their quarter-final.