User blog comment:A.J AL/Where does Death fit in?/@comment-79.115.76.121-20160602112601/@comment-26271908-20160602193703

Amara was not hurt by witches. Her vessel was weakened by them so the angels would be able to attack her properly this time, weakening her enough for demons to defeated her, before Lucifer could knock her out

Death himself stated that Godstiel with his 60 million souls + Leviathans was nowhere God's level of power. And, true, much of what he did was little near what Death, God and Amara could

Castiel was being empowered by 60 million souls, which means he was taking their power for himself. In Amara's case, they don't planned to use the souls as a fount of energy but of light, because she, as the Darkness, was weak against light. While the power of 60 million souls is not strong enough to put someone on God's power level, the light of 200 thousand souls could kill Amara