I really think this isn't very fair, because each slayer had her own fighting style. Buffy. She was a creative fight, used anything. She had a slayer skills and her ideas to pull her through. That was never part of the slayer package. We only know of two of this type of slayer. Buffy and the Boxer Rebellion Slayer.
Kendra. Now, she was by the book type of slayer. The way that the councial wanted. Not the Buffy type. She was raised by her watcher learning skills handed down from slayer to slayer. The lone only slay type.
And last Faith. She is nothing but a street fighter with slayer power. She enjoys it. It is like a basketball game. She love it. So I don't think that she will put alot of though to her actions. Meaning she will do whatever she wanna do. She fights dirty.
So... three types of slayer. No one can be a better fight because they have differnet slayer ways. Until you put a more people in each group, then you can think about this.
Last... the better slayer. I think they are equal to all of this, because they each have better skills then the only. Well, that is it. I am done. 🙂