Tbg,
You are talking about what was considered best of two speakers. That would of course be subjective and as such a matter of taste.
Neutrality is different. Its an objective fact. Either the speaker is neutral or its not regardless of someones opinion.
I never wrote that there exist one universal neutrality measurement. A set of measurements much more comprehensive than what JA is using will each one show deviations from neutrality on each character the measurements show.
Technology has moved on. Todays best speakermanufacturers like Tidal, Rockport Technologies, Magico, Wilson, Anat Technologies etc rely more heavily on measurements than the top companies of the past and mostly only huse listening evaluations for confirmation purposes. In fact one of the companies most respected for top sound and neutrality is Goldmund. They have made a press release that they only do listening evaluatios to confirm single compnent choice inside their products. Everything else is done by measurements.
Listening is too unteliable because its subjective and situation related.