Kunti devi is quite aware that the existence of the pandavas is due to shree Krishna only. Kunti who was the mother of the pandavas knew very well the power and the glory of her five sons. Arjun was the greatest archer. Even Shiva was defeated by him and he was the most intimate friend of shree Krishna. Bhima was the most powerful person in all world with one stroke of his mighty claws he could hundreds of the most powerful elephants. Great Kunti saw with her own eyes as he powerized even the most powerful rakshas.