The former New Zealand cricket player and coach Warren Lees says the difference in confidence between Australia and the Black Caps, was highlighted by the margin of victory for the homeside in the just-completed Test series.

He said the New Zealanders have a lot of work to do before they host India later this month.

Australia completed a cleansweep of the three-Test series winning all of them by more than 240 runs.

Lees told sports reporter Barry Guy that Australia showed the Black Caps what was needed to compete at the highest level.