One success from five attempts with the boot isn't up to his usual standard, and it could have been costly against a cannier and more skilful opponent. But he played with such pace and confidence elsewhere he should feel pleased with his efforts. He was substituted for Colin Slade just before the hour mark, but probably not for performance-related reasons.
Read More:
First Take: Argentina provide real test
As it happened: All Blacks v Argentina
All Blacks grind past Pumas
We know about his pace already, and how he can get back to make seemingly impossible defensive plays - last year against South Africa in Johannesburg and his tackle on Wallaby Israel Folau at Eden Park a fortnight ago spring to mind - but his speed on attack has the constant capacity to surprise.
His break and scampering run to get in behind the Pumas defence at McLean Park after the halftime siren were instrumental in Liam Messam's crucial try. Things were getting a bit testy at that stage, but it was another lesson for the improving Argentines - you can't afford to switch off against this mob.
Israel Dagg during the Rugby Championship test between the All Blacks and Argentina at McLean Park. Photo / Getty Images
And perhaps with that elusiveness preying on their minds, the Pumas defence drifted slightly in the next crucial moment, a beautifully-delayed Barrett pass for the charging Julian Savea after the break.
Aaron Cruden, likely to be slotted straight back in against the Boks at Westpac Stadium, has the overall game to remain in front of Barrett as Dan Carter's back-up, but Barrett must be considered one of the best running first-fives in the country. Certainly, he must be the quickest.
This was a pressure-filled test for Dagg, too. Predictably, the hometown boy received the biggest cheer of the night from the crowd after forcing his way back into the No 15 jersey after two tests out in the cold, and the break hasn't done him any harm.
There was no lack of confidence. Crucially, he backed himself and his pace and ran back at the blue-and-white wall with intent. His positional play was excellent as usual. A couple of handling errors apart, it was an excellent return.
The other major string to Dagg's bow, and the thing which might well factor in his re-selection against South Africa, is his kicking game. One clearance, when he scrambled back into his 22m in the second half when the Pumas had a sniff, clearly knocked the stuffing out of the visitors.
Significantly, it was Dagg, rather than Barrett, who kicked penalties for touch and, now he has his confidence and running game back after his niggling knee problem, that kicking power is something the All Blacks probably won't want to be without in the short term.