If you are talking about the type of guarantee Wheel to use, nothing is guaranteed, unless you have ALL 6 WINNING NUMBERS, on the same line, on at least one of two tickets. If you are willing to settle for a smaller $ prize, same scenario. You must choose the RIGHT WINNING NUMBERS in your Wheeling Group, to begin with.
Depending on the prize payout of the Argentina Pick 6 lottery, if there is a decent money prize for 3/6 or 4/6, then try at least a 3/3 or 4/4 Guarantee Wheel. This means that if you have at least 3 [3/3] or 4 [4/4] numbers correct in your Wheeling Group, you are guaranteed to have at least one line on your playslip, with 3 or 4 winning numbers, on the same line, for a 3/6 or 4/6 money $ prize.
However, I don't know of ANY Wheels, that result in only 2 tickets. Do you mean you intend to play only 2 plays ?? Or, do you mean you intend to play 2 tickets, with 5 plays per ticket, for a total of 10 plays ??