Of course they won't answer anything
There are two cases
- One is to tell you exactly which factor affect what, for example full stamina is 3% of the calculations.
Stamina between 50-90% is 2% and stamina under 50% is 1%.
But if you have those numbers, making the summary of the factors, you should expect a relative result for every game.
- The other case is that most of that are cosmetic and the only important factor is the quality of the team and the RNG of the game.
But then why trying give the max to your team every day ?
So in both cases, there could not be any official answer