User blog comment:Xilinoc/Ch. 549 - The Stormbringer/@comment-4620155-20130917204342/@comment-10554972-20130927025909

The 2nd Division is set up differently then the others because of the Onmitsukidō. The top five seated officers (including the captain) are in charge of their own section of the Onmitsukidō, so promotions in that Division are likely different then the others. Someone who is already one of those five, probably won't get promoted to a higher seat if there is an open position (except maybe for Captain), and will probably stay in the section they are good at. Because of this, you'd likely have those who are stronger than someone who is a higher seat then them.