Challenging (interesting) final battles.

It was high time to create such a topic, as many hours of gameplay accumulate interest, which is often decided in favor of one side in the final battle, and it is not always easy to give an advantage to one of the sides beforehand. Here is an example from my game in "Armageddon's Blade II", where the opponent, using diplomacy, joined a large number of troops, and I wasn't even offered this. Save with TE-lite, before Iona attacks Gunar. The arrangement and artifacts correspond to the real ones (i.e., do not change). Gunar clearly has almost no chance, and Iona, with all her might, attacks Gunar, who is hiding behind the castle walls. What do you think (who has the advantage) at the beginning of the first round?