While this may be true, what is most important is that the target is placed at the correct distance, height and in the case of more than one target, at the proper distance apart.
How you get the targets to the exact OE position is less important.
Consider the maps software on your phone/ You enter an address, and your phone provides 2 or 3 routes from which to choose. They all end up at the exact same location, they just get there in a different way.
One of the biggest differences is where measurements are taken, at the target itself or at some fixed point on the calibration frame.