User blog comment:EmpyreanSmoke/Supernatural Q&A/@comment-27457157-20150816070359

Another issue is the thought that the leviathans are superior to archangels, when castiel fought raphael with 50,000 souls, he was overwhelmed until lot's crystal hit raphael, but when he fought 2 leviathans in purgatory after losing those souls he could fight them off with some help from dean, I dont see how a species whose members were held off by a regular unenhanched seraph are a threat to an archangel except in extreme numbers