Scotland's stand-in skipper Grant Gilchrist pinpointed the impact of his side's scrum for clinching the 21-19 win over Argentina.
Duncan Weir's late penalty was enough to seal a turnaround on the scoreboard, having trailed 19-10 following Joaquin Tuculet's try.
"It wasn't perfect but we showed a bit of character in the last 10 minutes and that is something I am really proud of," said Gilchrist.
"I was just saying 'keep believing in what we have been doing all week'.
"I think it was a scrum that was the turning point, we pushed them off their ball and got three points to put us within seven and then great individual play and a great score took us right back in it.
"Then we had to score again and our forwards really stepped up. I am really proud."
The win was Scotland's third straight under new head coach Vern Cotter, with the former Clermont boss delighted to keep the confidence building within his new side.
"There is a big difference between losing by a couple of points and winning by a couple of points," said Cotter.
"We will get confidence from this because we came back from a difficult situation. We perhaps didn't score when we could have scored but we kept at it, we kept building and constructing our play.
"We will keep our feet on the ground, we know next week is going to be harder.
"There were some every positive things in this display, though, the line out, the scrum, even launching the play off the set phase, we just need to keep the ball a bit more.
"I think we constructed and produced more play this time I am glad that we believed enough to keep the ball and come back from 19-10 and score the necessary points to come away with a win.
"We started holding the ball a bit more often and set simple objectives of just getting over the advantage line.
"I am really happy to just see players find space and be able to vary our play and score tries.
"It is not perfect, we know exactly that. We found ourselves in a couple of situations five feet from their line and got turned over and did not score so we need to work on our work together.
"It was a positive result. We have some very good players who know how to express themselves."