During Sculpsure treatment, does lowering or increasing the intensity effect how much fat cells it destroys? Or does it matter?

The energy level is adjustable on the SculpSure device, so I would say it should never be painful for anyone.  The effective level is determined by the sensation that the patient feels during the treatment, so if you were experiencing pain, I would have decreased the energy level.  The fat destruction zone should feel like tingly, cramping or periods of deep warmth, but not pain.  

I am sorry that you found the treatment painful. Most don't. But yes, the higher the setting, the better your result. Glad that you are out of discomfort now.