That's exactly what I thought initially, but it's not that simple.
Couple of quotes:
Charlie Perez' Setup Hints
If you want increased steering exiting the corner with this setup you have a couple of adjustment options.
you can move the rear hubs towards the rear of the car. The further you move your rear hubs back will give you more overall steering and less overall rear traction.
X6 manual
Moving the hub carrier forward increases rear traction in two ways: Primarily you are
adding more ‘angle’ to the driveshaft, so there’s more scrub between the dog bone and
the outdrive as well as in the CVD joint. All this friction locks in the rear end and creates
traction. Moving the hub carrier forward also increases the percentage of weight on the
rear tires, further increasing bite.
Moving the hub carriers back is probably the easiest way to add steering and corner
speed to the X – 6 Squared. It’s one of the most commonly used adjustments for UK
Champion Ellis Stafford. Moving the hub carrier or arm back some will increase
steering throughout the corner. It also makes the car more stable in bumps, and
because the driveshaft isn’t as bound up, the car will “pop” better over jumps.