User blog comment:AYET/The worth of the Shichibukai to the Marines/@comment-122.167.105.14-20130601044819

The answer to the first part of the blog is in the second part. The Shichibukai exist because, assuming Sakazuki has beefed up the marines to fight on par with the Yonko, they might not win a crushing victory. If a Marineford-type situation arises again, it is entirely possible that the entire island may be destroyed. The Shichibukai exist to give the Marines the upper hand in a fight. The marines on their own may win, but with heavy casualties. And if I were a Yonko, I would order a few of my crew to go after the famous pirates whose destructive powers are stuff of legend, not the puny marine captains/other ranked officers since I think they are weak. -Braccas (because my smartphone is dumb and wont allow me to sign in -.-)