Scrum-half Nicolas Vergallo insists Argentina will receive a stern test of their World Cup credentials at the Millennium Stadium this Saturday despite Wales suffering a 62-5 defeat by England in their last outing.
England ran in nine tries at Twickenham at the start of August, while Dafydd James ran in Wales' only points.
But Vergallo is well aware Gareth Jenkins' side will look to bounce back ahead of their World Cup opener against Canada on 9 September in Nantes.
'Saturday's opposition are a team who lost their last game and will look to clinch a victory on Saturday,' said the Jockey Club Rosario centre. 'Considering how they have been playing, we'll have to run a lot.
'Wales are as tough as an opponent as the ones we'll face in the World Cup. I don't know if their style is the same as France or Ireland, but they play a very important tournament every year, the Six Nations, so they will be a difficult team to beat.'
Argentina have been drawn in Group D of the World Cup alongside hosts France, Ireland and rugby minnows Georgia and Namibia.
Centre Martin Gaitan believes Saturday's game will give Argentina ideal preparation for their World Cup opener against France at the Stade de France on 7 September.
'Wales a very good team and they will benefit from their home advantage,' he said. 'I think it will be quite similar to what we'll face against France in the first game of the World Cup.'
