The strategies of Kushan and Parthia were not actually wrong, but taking the same path led to vastly different outcomes for both.
The Thirty-Six States of the Western Regions served as a buffer zone between Parthia and the Han Dynasty. Parthia couldn't make a move, considering that the Huns were once a top-tier imperial power but were directly crushed by the Han. Even strong as the Huns were, they suffered greatly, so naturally, Parthia would avoid courting disaster. Of course, had they sent troops back then, they might have gained some advantage.
After all, in the late years of Martial Emperor's reign, the Han Court was already in dire straits, but the bloody warfare between the Han Dynasty and the Huns was brutal, not a battle won by strategic calculations. The blood nearly stained the Great Prairie red.
