Does the HD mod show it? If it does, that's a real shame. It's already a distortion of the gameplay, where there should be an element of risk.
If you want to calculate everything in advance, what's the point of playing? You turn on a few calculators, auxiliary utilities, and your opponent does the same. You figure out in advance who should win, and then you just go your separate ways...
But what kind of distortion is it, really? In the third game, you could see it in all the treasure rooms, except for those connected to the undead.
Справочник по НоММ-4 http://handbookhmm.ru/pamyatka-dlya-heroes-iv.html
Памятка по НоММ-3 http://handbookhmm.ru/pamyatka-dlya-homm-iii.html
и HotA http://handbookhmm.ru/vyishla-obnovlennaya-pamyatka-dlya-homm-iii-hota.html