The Pumas were awful in beating Georgia 25-7 in Palmerston North.
The Pumas, who only needed one league point from the game to advance to the last eight, played like a team that could lose by less than seven and still set up a meeting with the All Blacks in the quarter-finals.
Georgia, like most of the Tier Two nations, were brave up front but lacked any attacking threat to upstage the limp Pumas.
The opening half an hour was scoreless and Georgia scored a minute before half-time to change halves with a 7-5 advantage.
It took Argentina nearly an hour to regain the lead and two tries in the last 10 minutes (the last in injury time) added to a scoreline that was more impressive than the performance.
Goalkicking was again an issue for the Pumas, with just four successes from eight, but the match also highlighted the flaws of the competition structure. Once again a Tier Two nation could be competitive for an hour, but being forced to play a second match in four days proved their undoing in the last quarter.