Asking For Help To Understand The Logic of The Script

Hi All,
I have came across an interesting discussion in the Russian speaking part of mql4-5 forum:https://www.mql5.com/ru/forum/131990
This one here :https://www.mql5.com/ru/forum/131990...omment_3361804 and here :https://www.mql5.com/ru/forum/131990...omment_3361809

I used google translate to understand what was discussed. According to google translate the headline of the discussion is :'' The impact of the spread on the profit or "What timeframe is most profitable to trade?''

As far as I understand the author writes a script and he is trying to estimate the better timeframe for his strategy.
For example, - M1 timeframe is good and the expert creates many signals for entry, but it creates many false signals too. - D1 timeframe is good because less false signals, but not many good signals (because of D1) etc.......

My question is how does the script calculates which timeframe is the most profitable to trade ?Profit factor drawdown etc....?
What does the attached math equation describes?Does anyone know?

a good EA doesn't determine the best time frame. The best will calculate in the average mean time and does price action from its own timing, it calculates the price activity and makes the decision.
Timeframe is just a shackle.

From what you asked im pretty sure it uses the existed library, he just called the output value from the API. it is wasting time to analyze how it works. how to used the thing could be better.