"At the same time, we're proud of the process".
Down to 14 men after Damian de Allende was red-carded, South Africa fought back with a Malcolm Marx try converted by Elton Jantjies narrowing the gap to one point. The Pumas host the Wallabies later Saturday in Mendoza. "We did not get the result we wanted, but the performance was much better", said the captain.
"People want to measure us by results".
"The fightback showed that we were all warriors out there".
Barrett's older brother Beauden, who was originally supposed to be rested for the Buenos Aires game but was called in with Lima Sopoaga staying at home to attend the birth of his first child, will also start the game at flyhalf.
Hansen allowed four players - lock Sam Whitelock, flankers Sam Cane and Liam Squire and midfield back Ryan Crotty - to remain in New Zealand while he took a less experienced squad to Argentina last week, where they wrapped up the title.
"To do that you've got to play a good team".
A Jantjies kick-ahead was charged down and a five-player chase for the ball ended with Crotty claiming he scored amid uncertainty as to whether he touched down.
The first half extended for eight minutes after the hooter as the two teams kept the ball alive, looking for a score in a bruising battle of attrition.
Ross Cronje was the central figure as South Africa took and lost the lead during the third quarter.
"In the end the heroic Boks, as tends to be the case against the Kiwis, will lament the small errors made that eventually cost them, such as the little attempted tap pass when they were pressing for the line as the game reached the hour mark that was intercepted for a length of the field try for All Black winger Rieko Ioane".
Within three minutes South Africa restored their lead as Jean-Luc Du Preez strode over, only for a moment of magic from McKenzie to once again put New Zealand ahead.
The versatile David Havili is another option at Hansen's disposal.
However, a Springboks side unrecognisable from the one crushed by the All Blacks in Auckland, responded as Marx barged over after a line-out and Jantjies converted.