Umm, I think the whole issue revolves around the term 'slave'. Everybody brings their own thoughts to it and their own ideas as to what the word really means to them.
Thus, because the BDSM Community is such a broad church, it's inevitable that words like slave and Master develop very different meanings for different people.
For example, I don't consider myself a slave, but yes I fully admit the two people who work ever so hard to keep me on the straight and narrow and are helping me to be a much nicer person have control over key points and situations in my life. That's just the way it is and it works for us.
Sorry, if I've not made myself clear but I've tried to get across the idea, that for me, it's not really the description that matters, it's very much more about how the person acts and interacts with others.