All Blacks coach Ian Foster said Argentina had changed how it played compared to last season.
Coach Michael Cheika was a clever coach and was evolving his coaching group with the Argentine side.
Foster said: "We've noticed quite a significant change from last year, and they've got a group with a lot of experience.
"Any team that can beat Australia by 30 is doing pretty good. They want to play, they play a good style of rugby, play fast, and they've always got a few little tricks up their sleeves.
"It's a great game for us to come back to. It's great to be home, but the flipside of it is their performance, particularly in the last week means there's no room for complacency at all."
The time they spent in South Africa had been 'noisy' with all the issues after the loss of the Ireland series going on around them, but it had been a fantastic time for the team, he said.
"I think we learnt a lot about ourselves and we want to own our part of everything, and we know we want to get better so we saw that, and a great desire to do that. We just have to make sure we continue against what is a very strong Argentinian team," he said.
Foster said it was great to be in Christchurch. They hadn't played there often recently. The city had issues with its stadium.
"This is a very proud rugby area and a big part of New Zealand rugby, so having the All Blacks here and whether the feelings about me are personal don't really matter.
"What does matter is that we are proud to be here and hopefully, play in front of a loyal New Zealand crowd."
He didn't think the second Test win over South Africa was a one-off. They wanted to prepare at a deeper level, and while the win was pleasing, after pulling the game apart, there were still areas they needed to get better in.
"We've got plenty of motivation to make sure we don't rest on those laurels. We know that one win doesn't mean a lot.
"We know we've got to keep growing through this year. We've got a Championship we want to win and we're pretty focused on that."
Foster said midfield back Jack Goodhue's knee had not recovered, and after playing for Northland in the Bunnings NPC, there were still issues, so he will undertake surgery. There was no news yet on how long he might be out of action.
Lock Brodie Retallick had resumed contact training after recovering from his broken cheekbone. It was likely he would play for Hawke's Bay at the weekend, and if he does, the selectors will assess their options then.
Props Ofa Tuungafasi and Nepo Laulala had played some minutes at the weekend after recovering from their injuries. They would play NPC again this week, and then a decision would be made about when they rejoin the side.