User blog comment:A, Mori/Powers Scale/@comment-1827303-20141109232408

Jacques Tenebrae is of at the very least equal strength to the arches, if not stronger. The arches are of relatively equal power, but if you want an absolute ranking, it'd be Lucifer > Leviathan > Satan > Belphegor > Mammon > Asmodeus > Beelzebub.