NSW forward Paul Gallen says Queensland have every right to be cocky after their Origin II pummeling, believing the record 30-0 flogging actually flattered the Blues.

But the Blues lock is quick to counter that argument by highlighting the State of Origin series stands at 1-all and the 18-10 NSW victory in game one flattered the Maroons.

Gallen said he'd heard that Queensland players were gloating heavily during the Origin II victory but warned his rivals it all counts for nothing in Wednesday's winner-takes-all clash at ANZ Stadium.

"I don't know if they are that cocky now but after the game they were nice and confident but so they should be as they beat us 30-0," said Gallen.

"It's 1-all and that's the big picture I think a lot of people are forgetting.

"We were totally dominant in game one and people seem to forget that. I think the 18-10 scoreline in game one flatters them and the 30-0 almost flatters us because Queensland were ordinary in game one and we were ordinary in game two.

"They were all over us and to be honest we didn't have a lot in game two.

"We didn't go forward in numbers and they dominated us in defence ... they just beat us in every facet of the game.

"I think both games were totally different, one team dominated the other totally.

"It comes down to the decider now which is a massive clash and good for the game and hopefully we can pack the stadium out and get up."

Fellow NSW backrower Ryan Hoffman agreed with Gallen's assessment that the Blues were totally outplayed, adding it would require the entire pack to lift as one if they are to reverse the disastrous result.

Hoffman said NSW's biggest problem in Origin II was they failed to attack the game as they did in the series opener and had let the Maroons set up the victory on their own terms.

"We probably waited to see how Queensland would come out rather than go out and take it to them and that's one area we have to improve on," said Hoffman.

"Everyone has to step up to be quite honest after getting beat 30-0.

"We've all got areas to improve on and that's what we've focussed on."

Gallen knows the importance of next week's decider, with Queensland within reach of claiming their third series title in succession for the first time in two decades.

The Cronulla forward made his Origin debut in the 2006 decider in Melbourne and admits he didn't realise the importance of the decider two years ago.

But he won't be letting his second opportunity at a series win slip.

"This is sort of a second chance for me because playing in the side back then I didn't realise how much of a big deal it was," he said.

"I was just happy to be in the team and to be making my debut for NSW but now I realise how big of a deal it is and I'm probably not just happy to be here, I want to win the series."

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