I have gone to 2 of Ron Sutten's work shops,the first covered front/ rear roll center's as well as many other topics. It really is a lot to absorb in one day. The second ,a year later, got into different tuning strategies and set ups. Again a massive amount of info for one day.
The day after last years work shop I was running the autocross at GoodGuys. I found myself in a fight with a Camaro guy swapping positions run after run. I suddenly realized that besides air pressure I had another tool in my tool box,an adjustable watts link. I started moving the pivot up ,that loosened the rear up and put more grip up front,the car was responding by dropping chunks of time. The car was pushing on turn in. I ended up gapping the Camaro and moved 2 positions ahead of him with another less than .2 sec. I missed top 10 by that .2 sec.
In our higher HP cars than the "normal" autocrossers running a slight tilt on a Panhard bar is desirable to counter torque action coming off corners. That and the fact you can mount a PHB as low as you dare,lower than a Watts due to the height of the pivot.