Phenom and Chitubox Settings

I assume lift speed is related to peel force required to remove a printed layer from FEP. What I don’t understand is lift distance as it relates to lift speed. Why is the lift speed so disproportionate between the bottom layer and the rest of the print? There is also a difference between bottom lift distance and lift distance the rest of the print. These questions may be academic but I can not find any articles that describe these relationships. Trying to compare the Phenom MSLA to SLA or LCD printers is not very fruitful as they are ‘ALMOST’ the same.