Post-match analysis.

The wording is strange. Are we talking about Fortress battles? Well, that will still depend on how you conduct it. + magic, stats, and many other things (artifacts, terrain type...). If we are talking about "balancing," then it should be done with troops that match the speed of similar troops of the opponent. Or have the right magic.

P.S.
I advise balancing angels with Implosion – it’s reliable. As a last resort, Cursed Armor will also do. :D :D

We are talking about choosing a strategy: with what force to harass the opponent, not allowing them into their stronghold. Instead of Implosion, there is acceleration from Terek. I wouldn't want to let the opponent continue to harass, given this "niche" of his, but allowing him to retreat to his stronghold is like a death sentence – once he returns from there, he cannot be stopped. Gold drops without question, so the idea was to hang out on the border of the respawn areas, keeping the opponent on edge. However, 10 angels can also keep him on edge. There are potentially many ogres: 2 niches, etc. There is also a bird niche. However, money is not infinite, so something must be chosen.
All of this is an analysis of an already finished game; it is interesting to understand the correct strategy. In the game, the Barbarians huddled quietly and started to harass, went to their stronghold, but it turned out to be not as interesting as the neighbor's, and as a result, 18 angels with the rest of the force decided the outcome. From this, it became clear that you cannot let the opponent into the stronghold; you need to threaten to intercept the castle with a niche (we also have a few angels among the Barbarians). So, the question arose about forming a strike force...