And thereby determine exactly what we are calculating...
After all, the question of who is stronger implies conducting a sparring match taking into account the unit's primary stats and abilities. But how should we handle, for example, the unicorns' magical aura? This skill does not help the unit directly, yet it is useful for the hero's army... Or the Archangel's ability to resurrect allies? In a sparring match, this ability is useless for the Archangel himself. The same applies to units that increase troop morale (it's unlikely he increases his own morale when acting alone), units with the ability to cast spells during their turn, and so on.
None of this relates to the unit's strength, but sometimes it is a determining factor when choosing one unit or another for battle—meaning, will we think more broadly or not? :)
