It shows that Dofla isn't someone you should fuck with, he won't be just sitting there if someone has the nerve to blackmail him. His trip was unsuccessful because he was dealing with Law who apparently knows him very well.Yeah, but Oda could have just cut out the trip to Punk Hazard and saved us a chapter. I mean really, what would have been lost? He was just trying to hype us with a fake Dofla vs Aokiji to make the past chapter seem better.