But Brown, who injured his thumb for the 2011 RBS 6 Nations champions in their tour of South Africa in June, believes he and his Quins team-mates need to vastly improve on what was a poor first-half showing.
"Individually and as a team, that was pretty dire," said Brown, who has made four appearances for his country.
"We have massive standards and expectations of ourselves and those weren't met. We won in the end but we've got a lot to work on."
Despite the negatives, such a spectacular comeback proved the mental toughness of Brown and he was impressed with the belief shown by the team.
"We didn't start very well and up to 60 minutes we were pretty flat, we didn't get our game going and our defence was non-existent," he continued.
"We have got a massive belief in this squad, which showed in the end. We knew once we got our game going we could really push the scoreline.
"All credit to Wasps, they were awesome. If they play like that for the rest of the season, they'll definitely be pushing hard for the top spots."