They are all masters in celestials weapons and they are all devoted to virtue. My opinion is that they cannot be vanquished even by the celestials with Vasava (Indra) at their head.
सर्वे दिव्यास्त्रविद्वांसः सर्वेधर्मपरायणाः। अजेयाश्चेति मे बुद्धिरपि देवैः सवासवैः॥