User blog comment:Kaido King of the Beasts/Chapter 787: Push it Real Good/@comment-5.251.87.239-20150522153841/@comment-5398287-20150522192946

It all makes sense. Very Good is Blackbeard's father, therefore they can both have two Devil Fruits at once.

Back to seriousness, though, I'd find it interesting if Oda decided to show Borsalino in a more positive light by having him 1. kill Doffy's ass dead on the spot or 2. prioritize helping the citizens escape instead of immediately targeting the pirates present.