I wouldn't call 2 readings a reasonable sample size
Also there is actually almost no difference in cell voltage from the moment
charging speed is reduced. Charging speed is reduced as highest
cellpair reaches predefined voltage limit, around 4.1V. This voltage is kept until
the end of the charging cycle. 80% SOC is 4.0V.
Definitely people tend to finish with less than 1/3 charge left.
There is almost no difference between mid nineties and 100%.
As 100% is actually far from 100%. On the absolute scale of things
mid-nineties and 100% is something like 89%SOC and 93%SOC.
There is a reason why Leaf has 24kWh pack and around 22kWh is usable.
Usable capacity of that 24kWh is between 0.4kWh and 22.3kWh.
My phone charges up to 4.4V That is way closer to absolutely 100%.