The ultimate weapon

In Rogue One we will find out how the death Star was built. This film will show how the Rebellion got the plans of the death Star and figured out how to destroy it. So is The Death star the ultimate weapon? I say no. Was the weapon the First Order had in The Force Awakens the ultimate weapon? I say no to that too. The weapon in The Force Awakens was far greater than The death Star. It destroyed systems’ whereas The death star just destroyed one planet at a time. All this being said, I believe the ultimate weapon would have to be one of two choices. Either The Millenium Falcon of an X wing fighter. Of course I would prefer The Falcon. These might seam to be bad choices so I emplore you to ask two questions. Which weapons are still here? And which weapons destroyed the others?