User blog comment:Amerson26/Hell VS Purgatory/@comment-27177110-20151108212638/@comment-79.115.67.210-20151109125602

No one said that leviathans could negate archangels powers. They can negate all other angels power, but archangels are a lot differit. If leviathans were that strong why God not use them to fight the Darkness ( there a more than 1000 leviathans and archangels are only 4, and is very posible that archangels to be older than leviathans ). And even Carver himself said about season 11 that the boys will have to deal with the biggest threat since Lucifer. That means that Lucifer was stronger and dangerous that the leviathans and eve.

Only Darkness, God and Death are surely stronger than archangels