In principle there are technology reasons why inputs are different - Because we have many analog inputs for ADC and from some pins the analog path is long, we need to use multiple switches on each analog input. On the precision channels the number of switches is limited so it is recommended for main measurements. Standard channels have more switches in the path.
In the current revision of datasheet there is not much difference visible, but I guess the biggest difference will be defined later (source impedance).
In principle there are technology reasons why inputs are different - Because we have many analog inputs for ADC and from some pins the analog path is long, we need to use multiple switches on each analog input. On the precision channels the number of switches is limited so it is recommended for main measurements. Standard channels have more switches in the path.
In the current revision of datasheet there is not much difference visible, but I guess the biggest difference will be defined later (source impedance).
