SPMBT challenge: Presovo Valley

[Imp]

my guess is you probably aren't talking from experience

Not a great deal but from what I have played scenerios designed by the same guy tend to be roughly similar in difficulty though the odd one can be wildly diffrent.
Yes it wont be balanced but best you can do as designers often follow a sort of formula, could be wrong but example.
Normally give human best equipment or vica versa.
Normally set up dispersed or tight for defend delay etc.
Most scenerios by the same guy tend therefore to be unbalanced towards the same side & to a lesser extent by a similar amount.
As you say though based mainly on playing vs AI only done 2 by PBEM.