Brumbies captain Ben Mowen said his troops were delighted after they exacted revenge on the Reds following their tournament exit last season.
Full-back Jesse Mogg scored two tries for the Brumbies as they downed a disappointing Reds outfit 24-6 in their Super Rugby opener in Canberra on Saturday.
In a match that rarely reached any great heights, the Brumbies dominated the Reds at the breakdown to claim a well-deserved win.
The Reds, who finished 2012 as the top Australian side, were let down by a lack of discipline and were punished by referee Andrew Lees.
The winning margin could have been even greater but the Brumbies kickers had an off night, missing four penalty attempts and failing to convert Mogg's first try.
"They beat us twice last year and you try not to carry things over between seasons, but that really hurt us and we weren't happy," Mowen said.
"We left a lot of opportunities out there but I'm really happy with that."
Mowen said the Brumbies forward pack, which has been bolstered by the recruitment of Wallaby flanker David Pocock, had laid the foundation for the win.
"The breakdown is obviously a huge strength for the Reds and I think we matched them there tonight," he said.
The Reds only started to look dangerous in the last 15 minutes but they never really threatened the Brumbies' try-line and Mogg rubbed salt into the Reds' wounds when he intercepted a Quade Cooper pass to score under the posts.
"It was really disappointing how we played tonight," said Reds skipper James Slipper.
"The ill-discipline really hurt us and we let the Brumbies get good field position, and we just couldn't hang on.
"I don't think we gained any momentum through the forwards and we couldn't deliver any good ball to the backs."