As I said in another thread, the clone argument is more complicated than simply a move set.
What is and is not a clone often can depend on what kind of variety people expect from the game. Any shared trait, be it a move, style of clothing, background, weapon can be considered a clone trait, so what defines a clone from one person to another can vary greatly.
For some it's a pure fighting game and they see it only in moves, nothing else matters. In the extreme such a person would be fine if it was a game of greek school girls all with swords and shields so long as none of them shared the same moves.
Clearly no one wants such extremes, and same can be said for all I've mentioned.
For example some might care only about story, therefore backgrounds is all that matters, it would not matter if everyone had the same weapons or move set so long as each character has a clear difference of story and character. Another form of this is wanting the game to represent more background cultures.
For others it's all about appearance. Every character needs to look very distinct from each other. Is hard to do this without changing up some other aspects effectively, but taken to extremes, it could in theory mean as long as every character looks different in drastic ways, including the appearance of their weapons, that's all that would matter, even if moves were mostly the same.
Then there are those who care about weapon representation, they love it's a fighting based game with weapons and want more weapon variety. They're different from the moves people in that while they obviously want different moves to differentiate the weapons, but it's hardly a focus. If there are shared moves, that's fine where appropriate. No matter how different two characters with the exact same weapons are, they will find them more boring than two characters with different weapons that share several moves.
So, when asking, what is a clone character, one must consider all the different perspectives above.
Let's take Cassandra and Sophitia. While their moves have become quite distinct in terms of weapons they are clones, in terms of style and background they share some clone like qualities, which are further exacerbated by the shared weapon style. So are they clones? Not in terms of moves, but they sure are in some other categories.
Now let's take the current state of Kilik and Seong-Mina. Sure they in their last incarnation shared a lot of moves, but their weapons are distinct and they have clear background and style differences. To the people that care about moves first, they are too clonish, but to those who care about weapons and style for example they are much less clones than Cassandra and Sophitia.
Point being what makes a clone has many different variables to different people. The best way to determine a clone is, how far removed they are from each other in all categories, and to understand that each of these categories have different levels of importance to different people.
I for one find any of these taken to an extreme boring, as I'm most everyone else does as well. So unless you're happy with any of these extremes, to some degree the other aspects matter to you as well. No one wants to play sword and shield greek school girl identical quintuplets from the same school of fighting championship.
