I've kept up with this whole thread and there have been good points made on both sides but my conclusions based on everything are that:
The Harman training trains you to be a critical listener and makes you much more reliable and consistent than untrained listeners but both still come to the same conclusions regarding sound quality. Harman doesn't claim that the training affects bias in any way and all of the recent sound studies on headphones are still double blind, showing blind listening is still necessary to reduce bias.
It doesn't in any way mean that Amir is biased toward Harman but considering he owns Harman products, sells Harman products and is friendly with Harman engineers means he is probably more susceptible to Harman bias than any other brand. Of course it could just be that Harman products really do just sound great due to their research and superior engineering, all Revel speakers I've heard do sound good. We also have to remember that Amir's subjective impressions have largely been supported by the measurements, except with small speakers that are obviously being driven beyond their comfort zone.
With any subjective reviews online, if I consistently agree with someone's conclusions about a speaker I start putting more stock into their reviews but if someone doesn't like any of the speakers I have thought sounded good I know not to put as much stock into their opinions. I find most people are in 2 camps regarding subjective opinions on speakers, 1 type focuses on the midrange and higher frequencies while the other is all about bass and very high SPL, that may be simplifying things a bit but we know which category our host falls into. Either way, the measurements are the real gift of the website, if you don't feel the same about his subjective impressions, the measurements are the best we're going to get.