UP 3.0 vs HSFX 5.0?

[Aracno]

I dont want to go in the telenovela of "your data are wrong", i have read too much posts and i know is an infinite debate.
Maybe you are using different data, so if your FM check your data i'm happy for you, maybe Aachen is happy because his FM check his data too ..... people can decide by himself.
What i know is that Aachen its an aeronautical engineer that work in the aeronautical industry and a second WW ac passionate and a lot of people are loving his work.
I'm sure a lot of people are loving your FM, there is no reason to go in a "my data are better than yours" war, especially in a forum where the second guy involved (Aachen) is not present.

[Kwiatek]

Well there are not " my data" but just official data from these times used by Germans, British or Amercians for their planes. I mostly try and got if it is possible such official data not books, monographs etc. But if some planes in IL2 mods have obviously way too good or way too worse performacne comparing to even offical data from their country flight test there is really something off. But as you said i also dont want to start another telenovela "which data or mod is better" here, it is not point do to it.