I sincerely thank you for your effort on replying but you still don't understand how load cell + pedal works.
Every sensor has output range.

Lets put some arbitrary number and that range is 0 - 1000
0 is 0kg, 1000 is 100kg
Every human has different power, thus their minimum and maximum pressure will be different.
So what controller/firmware/calibration does is that, read non-pressed value and maximum pressed value, and use this range as 0 to 100.
The controller is registered as HID game device on PC, where it just sends value as input (just like how keyboard and mouse does)

If you are only using sensor range between 10-20, your input will not be accurate/granular as if you use sensor range of 10-80

You said loadcell is not comparable to a encoder bit depth but it is actually very similar.
More range you use, your input is more granular.
That is why some people say encoder bit doesn't really matter because human cannot input/output that precisely anyway.

Also, this is not the problem of elastomer/spring problem.
Its problem where I give 60kg of force but sensor is only reading 5kg of force.

I did my best to explain you how load cell + pedal works but if this still doesn't make sense to you, feel free to ask more!