I'm just evaluating it not from the point of view of a head-to-head battle, but taking into account the economic, tactical, and strategic aspects.
In most cases, everything always depends on the tactics chosen by the player, as well as their skill, even if the army is twice as large as yours, and the opponent almost doesn't know how to play, then you will win! But if the armies are equal, and the players are too, then everything depends on the skills and strength of the units! (IMHO)