There are a number of people that you can ask for a definition of Clone and you will get different answers from everyone. I do not put ride system in that definition. If the attractions is a water ride then it is a water ride and the show scenes are basically the same. People here have issues if an attraction uses the same ride system with a different story because they consider it a clone. As if there can even possibly be a different ride system for every attraction that exists.
The Cars ride was talked against because it was the same ride system as Test Track, yet at one time there were 5 omni mover rides in Future World of the original EPCOT alone. No problem with the ride system on that one. And then there was Energy and over in MGM the GMR was basically the same ride system... no problem there. I don't even remember anymore the ones that I called a clone, but, all I used for identity was that same title, the same story (with some changes) and basically the same thing with show or ride vehicle. However, Cars and Test are completely different stories. Energy and GMR were completely different stories. They were not clones. They are simply attractions that share the same ride system technology.
Tiki Room in DL is exactly what it was in WDW until many years later they made some changes in the WDW show, however, it was the same attraction. Pirates was the same scene the same ride system and the same story, but, the beginning was more a New Orleans setting and it was in the New Orleans section. The beginning of the ride transitioned into the same Pirates ride with a couple of missing or different scenes. The idea was cloned in WDW after the one in DL.
Everyone is the same IP between DL and WDW. If a very large portion of it is the same story and concept then it is a clone in my book and along the lines of attractions in a theme park. I think clones are good especially if they are more then 1000 miles apart, to deny those, that for whatever reason, of enjoying a ride because it already exist 3000 miles or an ocean away, are just selfish and unreasonable. In the theme park world it is a good thing. If it is loved on the West coast it will probably be loved on the East coast. In my travels the one clone that stood out to me was Soarin. I had first seen it in DL and it was a walk on. I then went to the one in Epcot and the line was unbelievable and has remained that way to the point that they needed to add another theater. To have denied that particular clone would have been unfair to WDW guests. It was actually more popular as a clone then the original was. I see no problem in that.