I assume it's due to the dealer or customer having to set the length of minutes for each of the 5 cycle positions of a regeneration individually.
Why do you see that as a benefit when compared to the Clack WS-1 CS where a pre programed number does it in one step as compared to 5 steps in the 7000? That P number allows the selection of the same number of minutes for the cycle positions to the same settings you would want in a 7000 or other Fleck valves.
And why do you think Fleck got rid of variable bring with the SXT timer if not due to excessive water use caused by more frequent regenerations when compared to the same softener without the variable brining feature? You sound as if you don't know how variable brining works Bob, how about explaining it to us and showing how I'm wrong. Or have you misunderstood "water efficiency"?
BTW, if you want to compare 1.25" controls, compare the 7000 to the Clack WS-1.25.