When I was a dub, I came to realize that everything about JW's was modeled on the Roman Catholic heirarchy and organizational structure. President of the society = Pope; GB = college of cardinals; Bethelites = nuns and priests; DO - cardinal; CO = bishop; CO = parish priest; Elders and MS's = deacons. In her book, Visions of Glory: a History and a Memory of the Jehovah's Witnesses, Barbara Grizutti Harrison pointed out that the JW's were just like the Catholic Church of the middle ages.
No, I'm not at all surprised. Without Catholicism, the JW's wouldn't know how to operate at all.