User blog comment:Kaido King of the Beasts/Chapter 877: The Candy Shop is Closed/@comment-120.28.47.154-20170904040247/@comment-122.53.183.170-20170911084236

No. Perospero noted that if Big Mom realizes that there isn't any cake on the Sunny, he's done for. Say they do destroy the Sunny, Big Mom kills off the Straw Hats and end up empty handed right then and there. You can always argue that they could just tell Big Mom to go to Chocolate Town to lie about the cake's whereabout but to make it persuasive, they'd have to tell her that the SH moved the cake from the Sunny to CT. They have to have the Sunny in tact for that. Or else, Big Mom will probably know something's up if she notices that the SH don't have the cake with them personally and also don't have the cake in their ship.