The Pumas put the world champions under significant pressure for more than 50 minutes in Hamilton on Saturday, claiming the lead on three occasions.
However, a one-sided final half-hour saw the All Blacks run in 33 points without reply to secure an ultimately emphatic victory.
"Just an ideal game for us, wasn't it," said Hansen. "We've come off two pretty successful weeks against Australia and then [we were] put under a lot of pressure in the first half and had to find some answers.