OK, so it was all "measured" subjectively with your ears?
Isn't that what this hobby is all about? Listening....?
So far the feedback that I get on the tube connectors is consistent that they sound better than binding posts. And every single customer that has installed them in parallel with their binding posts, so that they can swap back and forth between the two, have all given feedback that the tube connectors sound better.
So far I'd have to say they have been quite a success.
The differences are greater on higher end systems, but even with mid-fi or budget level gear the feedback is the same.
Check this one out: https://www.youtube.com/watch?v=oLnBW3wuBSU&t=2s
Ron has some good ears.