Wallabies hooker Tatafu Polota-Nau has paid the Pumas' forwards the ultimate compliment by saying they are the tournament's best pack.
Polota-Nau said although the Pumas are not as highly ranked as New Zealand or South Africa on the IRB rankings, their forward play has been the best in the competition so far and he expects a relentless physical onslaught from them in Saturday's Test on the Gold Coast.
Argentina's pack have impressed against the Springboks and All Blacks in their three opening encounters and Polota-Nau said the Pumas' play up front was better than their opponents in those matches.
"It's on par, but if anything better," Polota-Nau told AAP.
The Pumas pack's ability to win crucial turnovers and their commitment on defence unsettled the Springboks in their 16-16 draw in Mendoza as well as against the All Blacks in their 21-5 loss in Wellington last week.
"They probably have the stats for the highest turnovers and it's because of all their forwards working so well in the defensive area and jackling and creating such a mess at the breakdown," Polota-Nau said.
"Technically if we're not sound we'll get punished.
"So as a contest it's on par or if not better because I think from (numbers) one to eight they can all be jacklers."
The Pumas also place a huge emphasis on dominating the scrums and the Wallabies have prepared for any surprises in the set-phase by picking 122kg lock Kane Douglas, ahead of the lighter Rob Simmons as the injured Sitaleki Timani's replacement.
"That's the beauty of the Argies, they're quite the unorthodox team so we actually don't know what to expect," Polota-Nau said.
"We're prepping by all means necessary to make sure that any scenario we can (1) stop but (2) stick to our plan - of getting the ball in and out and let the backs do the rest."