Had the decision gone their way, the Wallabies would have broken the 6-6 deadlock and been on the path to almost certain victory - given the torrential rain and heavy wind in their favour.
It seemed only a matter of time until weight of possession would kick the Wallabies ahead but panic set in and they missed their chance.
Wallabies No.8 Scott Higginbotham said he felt the home side was unlucky, but had no one to blame but themselves for the loss ahead of Saturday's first Test against Wales in Brisbane.
"As you saw, Rob Simmons got over and that was unfortunate to be disallowed but that's the way that goes,'' Higginbotham said on Wednesday morning ahead of the team's flight to Brisbane.
"We kept hammering that line but couldn't seem to get over the paint so it was tough.
"There was a couple of ... I don't know about harsh, but unlucky penalties where they converted those points.
"They were just lucky to get that penalty at the end ... that's just the way those sort of games go.''
Wallabies' debutant Mike Harris missed two crucial long-range penalty attempts - but wishes the match didn't come down to his missed kicks.
"Hindsight is always a beautiful thing but, if that try was awarded, everything would have been different,'' Harris said.
- AAP