im not going to tell you im capable of discerning all the intricacies that go along with suss'ing out what a fine tuned suspension should feel like BUT I did have my SD Ult Tractive tuned for my HightowerV2 w/ CC link. Things I noticed;
The shock now rides higher when descending which has helped with handling. I have much better support in berms as well as traction. The rear wheel now tracks the ground similar to how my previous bike w/ 11-6 tracked. Lastly, I could tell a difference when in the roughest sections of trails I ride, the bike feels more composed and easier to hold a line when im close to my limits. Im not familiar with other tuners work as this is the first air shock ive had tuned but i can definitely say Vorsprung's Tractive made my shock better which in turned made my bike better equaling happy me. Hope this helps