Right...and just like a trans flush, I'm going to ask the important questions. Of those that had "bad" luck, how many had a prexisiting issue that fresh fluid wouldn't have helped?

Most of the time, we are going to find that people don't maintain a trans very well. Once it has an issue, they try stuff and have "bad luck" with different fluid, a flush, a service etc etc. Yet the real issue isn't the fluid, but instead it's the lack of maintenance to that point.