The greatest difference between a grand war and a village brawl, besides the level of force employed and the scale of the battlefield, is that the latter only requires gathering a troop and issuing each person a Longsword to begin.
The former, however, is not just about the tens of millions of Radiant Gold Coins burned through daily. It also requires the foundational support of a population in the tens or even hundreds of billions, a complete military command structure, and the backing of massive agricultural and industrial production.
The outcome of a grand war can hardly be decided by just one or two overwhelmingly powerful individuals.
Even the power of a Sky Knight, whose full-strength strike could level a mountain range, is insufficient on the scale of the Cosmos to single-handedly suppress every theater of war.
