Compared to the Philippines, which only has an army of 150,000, the army of the United Kalimantan Great Sultanate was even larger.
But given that Kalimantan is a pure Colony compared to the Philippines, the combat effectiveness of Kalimantan's army naturally came into question.
Arthur did this to balance the power disparities between the various Sultanates, and apart from the difference in land area, the disparity in population was minimal.
This also represented a very alarming situation, as any one of the Sultanates within the United Great Sultanate had at least a population of four million.
Particularly the existing Kutai Sultanate, which occupied the second-largest land area in Kalimantan and was close to the Coastline, was considered wealthier than the other smaller Sultanates.