I am sure set up is huge and knowing how to tune your suspension would also be important, but I assume that Hygear developed the linkage to compensate for the harsh ride of the stock suspension? Maybe there is another reason and the ride quality is just a side benefit, but I remember reading other threads where a lot of people swore by the Hygear linkage as the cure for the harsh ride.
I replaced the stock shocks with QS3’s and there was a huge difference in the ride right out of the box. If I really knew how to tune my suspension I probably could even improve on it.