User blog comment:AYET/Other talks about chapter 747/@comment-10543621-20140515065855

I'm actually really glad that Doffy as an opponent has been shown to be very different from past adversaries. Thus far, the majority of Luffy's enemies tend to treat their crew as expandable resources. People like that are always easier to defeat. They tend to not go far as a pirate crew either. Doffy on the other hand is an example of a truly sucessful pirate crew. He genuinly cares for his crewmates and treat them like family.

I think so far, all really sucessful crews need to have genuine bonds with their crewmates. Doffy may indeed by Luffy's toughest opponent yet.