Garys situation is different, he has next to nothing in his car, especially the rear, there is substantially less weight.
What we need to do is to run a COMPARATIVELY softer rear than the fronts. Spring rates used differ between front and rear because, like pointed out, the position they are relative to the suspension pickup points (pivots) affects the WHEEL rates which is what we are actually trying to control. The rears need to have higher SPRING rates to acheive the same WHEEL rate as the fronts because they are CLOSER, not further, to the pivot point of the rear axle, this have a larger moment input on them.
The GAZs are massively over sprung from facotry and the car bounces all over the shop, not letting the dampers do anything, and everybody winds up the dampers to stop it pogoing, and then its just too stiff for the road.
But suspension is personal preference, so everybody will be happy with different things at the end of the day.