Which Hero from Heroes of Might and Magic III is the best?

For Cytosian troops, offense is more important than armor, as they are generally fragile and rely on speed and attack. Therefore, it is more important to deal more damage to the enemy and avoid taking damage themselves. Swamp troops, on the other hand, rely on defense and health; they will inevitably take hits, so it is necessary to minimize the damage from those hits, and armor is perfect for that.