User blog comment:Kaido King of the Beasts/Chapter 842: I Came in Like a Cannonball/@comment-29757981-20161006074518/@comment-30127592-20161006234148

While i'm pretty certain doffy could take a direct hit better than Cracker could, especially with his statement how he "hates even a needle's sting", Cracker's usage of his devil fruit makes that point obsolete. Through use of his DF-armor he withstood the gear 4th hit that sent Doffy flying through half Dressrosa with minimal damage. We also can't discount the fact that he continously made new puppets for 11 hours straight, and only lost because he lost his nerve. If it hadn't been for Nami finding the weakness of his DF, luffy might even have lost.

Also, we have to give him credit for actually making luffy say that he's completely full. That fact alone makes him a unique combatant