Juan, thanks for continuing to post despite some negativity. I can see why some clients might think escorts like more info rather than less so they can filter potential clients that they don't find attractive or that don't fit their hirer characteristics, but I doubt many would do so. And when an escort says he doesn't do that I believe him, unless I have firm evidence to the contrary.
The examples you cite about how client information enables you to determine whether you are a match, and if so how it enables you to tailor the meeting make perfect sense to me. The fact that you are prepared to tell a potential client that you don't think you're a match, or that part of his expectations for the meeting are unrealistic is a sign to me that you take your job seriously.
On confidence, I don't go into any meeting with an air of self-confidence, or that I know exactly what I want and will make it happen. I do go in comfortable in my own skin, having a good idea of what I want and being confident that if I am paying my partner he will be able to encourage me, and that despite any hesitation on my part that I will have a good time!