User blog comment:Kogath/Monster Hunter 4 Ultimate for the Nintendo 3DS/@comment-21371438-20140926222735/@comment-4911512-20140926223330

from my understanding, relic armors are the excavated armors. relic is what their localized name I believe. the EX armors, I don't know much, but I know that they're armors that have the old look, like the rathalos EX armor has the armor model from freedom unite. I think.