Rugby:Australian flanker David Pocock believes accepts he will be targeted on Sunday by the New Zealand pack

The battle against Richie McCaw and the All Black back row is set to dominate the breakdown area and could be decisive in this weekend's rugby World Cup semi-final at Eden Park.

The 23-year-old Pocock, who has already played New Zealand 11 times in his short test career is the team's poacher in chief in the tackle area.

"It is fairly standard these days for openside flankers to cop a bit of heat from the opposition and, I mean, they've got Richie McCaw, too, so it is going to be a really important part of the game," said the Aussie flanker.

"Both teams know that and in the past it has been a big part of the winning team... the way they've played, they've dominated the breakdown."

It is hard to argue against the thesis that Zimbabwean-born Pocock is the most influential player in Australia's run to the last four. Absent through injury when the Irish back row blew away the Wallabies on their way to a pool stage upset, Pocock returned for the final two group victories and then played a major role in the quarter-final win over South Africa.

Against the Springboks last weekend, Pocock made 27 tackles and missed none, and, having spent most of the afternoon bent over at the breakdown with his hands on the ball, was credited with three turnovers.

Now rivalling McCaw as one of the world's best openside flankers, Pocock has learned the downside to success too with accusations of cheating that have dogged the All Blacks captain for many years.

"I think it's fairly standard for most number sevens," Pocock said. "It's been pretty funny checking Twitter. It's all been in good humour."

Another thing Pocock has perhaps learned from McCaw is that number sevens should always pay their respects to the opposition and, crucially, the referee before the game.

"The All Blacks probably have a different set of threats," he said. "They use a bit more footwork and you probably have to say that their work at the breakdown, across the board, is probably a bit better and more contested.

"We're going to have to step up at the breakdown again and Craig Joubert's a great ref, so we're expecting him to be good there."

The "respects" rule also extended to questions about whether he was now better than three-times world player of the year McCaw, particularly as the All Black has been carrying a foot injury.

"I don't get involved in that kind of thing, it's such a big game for the team, and that's pretty much all I'm focusing on at the moment," Pocock said.

"At this stage of the tournament, there wouldn't be too many blokes who aren't carrying some sort of injury. Come game day, everyone puts that behind them and you don't notice anything."

As for questions about whether good opensides were so effective because they knew the rules better than the match officials, that was clearly one to meet with a very straight bat.

"I've got no idea, I guess, I really don't know," he said. "I leave that to you guys to discuss."