A program for calculating the strength of the guard on random maps in Heroes of Might and Magic III, called H3CalcGuards.

An object with a value of 6466, strength 4, in the list of guardians – mages, group of mages, group of djinns (common ones are omitted); I set the strength to 5, and the common ones appear in the same quantity as the upgraded ones.
Is this explainable?