The 23-year-old Retallick's statistics are impressive enough by themselves but his presence on the field also reaps intangible benefits. With the Chiefs player creating his unique brand of mayhem, colleagues such as Whitelock and Kieran Read have the confidence to roam wider where they can create opportunities for the backs with their handling skills and awareness of space.
Also, no statistics can measure how hard Retallick hits bodies threatening to slow the All Blacks' ball, or the timing of a pass.
In terms of the numbers, Retallick easily made the most passes and beat the most defenders in the Rugby Championship for locks. He also made close to the most metres, carries, tackles and turnovers.
The lineout numbers are revealing because while he and Whitelock work well together - and in particular when pilfering the opposition ball with six steals between them in the championship - they are not the leading ball winners for the All Blacks. That honour belongs to No8 Read, who, with 27 takes, has won more lineout ball than Retallick and Whitelock put together.
As Hansen looks for an improved performance from his team, he only needs to look back a few tests to see how they can respond to a setback. The All Blacks were poor in their first Bledisloe Cup test in Sydney in August, a match in which they couldn't find their groove and eventually scrambled to a 12-all draw.
What followed at Eden Park a week later, after a few home truths behind closed doors, was a shock and awe performance in which even the normally clinical Richie McCaw was carried along by the collective aggression and willingness to put things right.
With Retallick back on board the All Blacks have the perfect weapon to launch a similar assault.
Key locks
Brodie Retallick
2014 Rugby Championship appearances: 5; Minutes: 364; Carries: 30; Defenders beaten: 5; Passes: 39; Tackles: 44; Turnovers won: 6; Lineouts won: 10.
Sam Whitelock
Appearances: 5; Minutes: 347; Carries: 23; Defenders beaten: 3; Passes: 14; Tackles: 56; Turnovers won: 2; Lineouts won: 12.