[@vancexentan] I have no problems with having the old Medusa as she is not very OP. Some of it might be due to Shinji knowing eff-all how to use her skills to their max potential (I'm talking near the start), but overall, her stats are not undefeatable even with her NPs.
Edit: She was obliterated in pretty much most of the major fights too, which was pretty sad, cause she's a rather great character.