Yeah that’s my understanding of it. The CSL Elite can take up to 90kg of pressure so if you set it to 50 then you need to put in 45kg for it to register 100%. I have it set to 90-100% for the F3 car, 60-70% for GT3s because of the ABS.
I think the CSL pedal is set to 65 shore, which is equivalent to the ‘soft’ setting on the CSL Elites. I use 85 shores with the Elites so my pedal will be stiffer.