The dynamic centrifugal power on the ATF is equivalent on either side of the piston since the surface diameters on the activation and compensation chamber seals are exactly the same. Therefore the piston force has become independent of slip velocity, and Also, the tension chambers from the clutch are shielded https://torqueconverterclutch30738.blogdon.net/rumored-buzz-on-torque-converter-clutch-50310811