Some thoughts on unit sizes

[Puzz3D]

In a nutshell: bonuses are bigger overall when applied to larger units. This tends to cancel out their intrinsic weaknesses, and make them more competitive with smaller, 'stronger' units that have the same bonuses.

That isn't how combat works. The relative difference in combat power between two units is related to the difference in combat points, i.e. (attack - defense). If you add the same number of combat points to both sides, the difference doesn't change. However, increasing chevrons does raise morale which will help a larger, lower morale unit more than it does a small high morale unit.