User blog comment:Madhhatter/The New Admirals/@comment-5729687-20121118080416

Yeah it would seem that Onigumo and Momonga will be promoted Admiral because of being a Highlight more than other Vice Admirals. So we got a Probably a Spider Zoan and a non Devil Fruit user.

If I'm gonna to be another possible candidate to be an admiral it would be Vice Admiral Tsuru. She is called "The Great Tactician" and she got a devil fruit. She is also highlighted as much as Momonga and Onigumo.