England still ultimate Test for Wallabies
The clash at Suncorp Stadium the 18th and final Test of England's marathon season has been dubbed 'the rematch', though neither side has quite bought into the publicity.
"It's a big test any time you play England. It's a good game to get motivated for. They are the world champions," said Gregan.
"Revenge isn't something we have spoken about.
"I can't see how you can get revenge from losing a World Cup final because if we win this match it doesn't change anything.
"I spent a bit of time with a lot of blokes over December and there was a lot of emotional energy in that.
"But reality hit pretty hard when we got back together with our provinces. We are playing for the Cook Cup and that is what we are focusing on, playing well in this match."
England have slipped away since their World Cup win, losing four of their seven Tests and relinquishing the RBS 6 Nations crown to France along the way.
Clive Woodward has lost leading figures like Martin Johnson and Neil Back to retirement while Jonny Wilkinson is still out injured and England have embarked on an intense rebuilding.
They were beaten comprehensively by New Zealand over the last two weeks while only Lawrence Dallaglio, Richard Hill, Ben Cohen, Josh Lewsey and Mike Tindall survive from the World Cup final starting XV.
But Gregan still holds England up as the team to beat in world rugby.
"They are the world champions, they are the benchmark.
"They proved that last year and in the years before that they are the best team in the world," he said.
"I'm sure it's been a disappointing time for them.
"They'll put everything they've got left into this performance. We will too."
England have an entirely new tight five from the World Cup final while Australia have moved to strengthen their pack with Radike Samo coming in at blindside flanker as a genuine third jumper.
Meanwhile, Wales captain Colin Charvis has warned his team they will need to toughen up their act in order to meet the challenge of South Africa.
Charvis and his team-mates face the Springboks in a one-off Test at Loftus Versfeld in Pretoria.
Wales have travelled to South Africa after a hard-fought Test series in Argentina, which ended 1-1.
South Africa are in a rebuilding phase under new coach Jake White but have already beaten Ireland twice this month and Charvis is anticipating a step up in intensity.
"When we go up against the Springboks, we'll have to play a much tougher brand of rugby for the whole game or we will be punished," said Charvis.
"We didn't play for the whole 80 minutes in either match in Argentina.
"We are going to have to perform for the full 80 this weekend, because it's going to be very tough against South Africa.
"They have shown against Ireland just how strong they are.
"If we let them start strongly against us then we are really going to have our work cut out."
Elsewhere, former Leicester director of rugby Dean Richards will take over as Grenoble coach next season in place of Jacques Delmas, club president Alain Etievent said.
Pierre Tremouille will be his assistant and Gareth Adamson will be fitness coach. Etvient said Delmas had been sacked because of a "difference of philosophy".
"They didn't even bother telling me," said Delmas.
Grenoble finished third from bottom of the French championship, just avoiding relegation, and lost their last match of the season 81-17 to Pau.
Richards, the former England No.8, who prior to succeeding Bob Dwyer at Welford Road played for Leicester, led the club to seven trophies in six years including four straight English Premiership titles and back-to-back European Cups.
CONNECT WITH US TODAY
Be the first to know the latest news and updates
