Upgrading from Fanatec CSL Elite LC or V3s to Heusinkveld Sprints: what makes you faster?

At the moment I am using the Fanatec CSL Elite LC pedals. I am considering upgrading those pedals to Heusinkveld Sprints.

In a couple of videos people have said they became a faster driver when upgrading from CSL Elite LC or V3s to Heusinkveld Sprints. I was wondering why they became faster, because all three sets have loadcell brake pedals and have customizable rubber elastomers in their brake pedal to customize the feel. Does the hardware make the difference or is it the software, because with the Sprints you can create your own output curve for each pedal? I find it hard to believe that the fysical customization possibilities of the Sprints make the difference.

I would like to know from people who upgraded from one of the aforementioned sets or other Loadcell pedals to the Sprints: which feature of the Sprints do you think made you a faster driver (or maybe they didn't)?
 
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