User blog comment:AYET/The worth of the Shichibukai to the Marines/@comment-5962458-20130529072238/@comment-5962458-20130529085814

Yeah totally agree, but noumbers count here as well.No matter how strong the admirals are they are still 3 (4 including the FA) they can't be at many places at the same time and they can't repel an organised attack by powerful pirates.That's why they need the 7bukai.