There was one very important reason: they had the advantage of preparation. Neither Morlun nor the others in his family could have imagined that their weakness had been completely exposed, and that Peter had even created weapons specifically designed to counter them. Of course, Superior Spider-Man deserved thanks for that as well. To enhance his combat abilities, Superior Spider-Man had transplanted the octopus tentacles he had used as Doctor Octopus, reshaping them into spider legs and mounting them onto the Spider-suit.