Artania

Um... I don't quite understand... stronger in what way?
The Orc has a total of 13 stats, the Elf has 14, and the Knight has 13. So, they are equal.
Is it the specialization? +1 to attack for each stack killed every 6 levels? So, at level 24, there will be +4 attack if a stack is killed... Is this an overpowered specialization?
Perhaps Kurak has better artifacts at the start, but that doesn't compensate for the 2 extra castles. 2 extra castles = 4 gold mines at the start + a 4x increase in low-level units (like archers). With that many archers, the Orc will simply be shot down.

It would be better to have 3 castles for each race. There is plenty of space on the map. If, for example, with this setup, two people play against each other, one as Elves and the other as Orcs, the Orc player will have almost no chance.

Added 5 minutes later

The purpose of garrisons is to delay the final clash and block heroes with 10 peasants who run around and grab mines.
Maski made a map; I'll update it in the thread when there are enough changes.

It's enough to gather a decent force in the city closest to the heroes' landing point, and none of the heroes "with 10 peasants" will dare to approach. And it's unlikely that such heroes will have Astral Gates in their spellbooks. And it's unlikely that anyone will venture to the opponent's territory on the second week; it's much more effective to develop your own cities first. While you're sailing to the Humans with a small army, they will have time to gather an army 2-3 times larger from their 4 cities. It's a different story when you have 500 Master Archers with a Unicorn Horn Bow and a Quiver. You can defeat everyone with your eyes closed.)