Quote from strixflash
Looks like the thing called SAD is responsible for all this.Donflamingo acknowledged Lufi for his conqueror's haki!
Edit: Looks like Luffy is going to defeat another shichibukai.
Not directly, I think. Although his downfall may mean Luffy will have another very dangerous pirate after his rubbery head.
Sarcasm just doesn't work over the internet.