Argentina's technical advisor Sir Graham Henry believes Australia can become the world's best side again if they stick to their expansive game-plan.
The Wallabies have struggled since new coach Ewen McKenzie took over the reins from Robbie Deans and they are currently on a four-match winless streak.
But Henry, who coached the All Blacks to the 2011 World Cup title, believes McKenzie is the right man for the Wallabies and backed the former Reds boss' attacking style of play.
"When they were the best team in the world at the turn of the century, they played an expansive game," Henry told AAP.
"It's the way they should play because that's their mentality and that's their skill level.
"I don't think you are going to win games by playing chess-board rugby and kicking the balls in the air and chasing it.
"That's not the way Australians play, and they haven't got the forward pack that can give you that sort of dominance.
"I think they're trying to play the game the right way.
"They're struggling at the moment, but I think a couple of wins under Ewen will put them right.
"They'll gain some confidence. He'll gain some confidence, and they'll grow from it."
McKenzie guided the Reds to the Super Rugby title in 2011 and Henry believes the Australian Rugby Union made the right decision to appoint him ahead of Brumbies boss Jake White as the Wallabies' new mentor.
"Jake's South African, so he coaches the way he's developed his coaching over the years," Henry said.
"James has put his style in with the Brumbies. They're playing South African kind of rugby.
"Would it be successful at the next level?
"I think Australians would struggle with that style because you need dominance up front. If you haven't got dominance up front, you're buggered."