The Brumbies' win 91 per cent of their lineout ball - the best in the competition alongside the Reds - and lose the fewest lineouts per game (1.2).
Hurricanes loose forward Victor Vito, one of his side's key lineout jumpers, said they had no need for panic around their lineout.
"I think, if anything, it was just little individual roles that some guys just clocked off on at the time," he said of their recent lineout struggles. "So we are not going to be tweaking it too much but just making sure we get a lot of clarity in those roles before we roll in."
The Waratahs have produced an impressive run in their title defence - they were one of only two teams to beat the Hurricanes during the regular season.
They have big men across the park who love to get their hands on the ball and, like the Hurricanes, they rank high in carries, metres, clean breaks and defenders beaten.
But the Highlanders' attack has flourished in recent weeks with try-scoring wings Waisake Naholo and Patrick Osborne tearing up the flanks.
They average the third-most tries per game (3.5) and win the most scrums per match (7.9) in the competition. The Waratahs win only 85 per cent of their scrums, the fifth-lowest figure in Super Rugby.
The numbers point to an open contest in Sydney.
Key players in semifinal action this weekend
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Highlanders wing Waisake Naholo bagged a double against the Chiefs last Saturday and is the top try-scorer in Super Rugby.
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Hot on Naholo's heels is Hurricanes halfback TJ Perenara.
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Waratahs fullback Israel Folau has carved off the most metres with ball in hand this season.
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The Brumbies have a sharp lineout and forwards Sam Carter and Scott Fardy have both registered the same number of takes this season.
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Waratahs back Kurtley Beale has the third most offloads in the competition behind Folau and Chiefs midfielder Sonny Bill Williams
