User blog comment:Kaido King of the Beasts/Chapter 857: The Art of the Deal/@comment-25161930-20170302104247/@comment-25161930-20170303082055

Jinbe probably doesn't want to include the  Sun Pirates  so they'll stay on Big Mom good side and they and Fishman Island will be spared.

As for  Pekoms, knowing his reaction to Bege, I dont think Jinbe include him in a plan that will not only be against Big Mom but also allying with Bege.