Badger-
could it be that we rarely look at clean release as an attribute of the bow it's self? I know as an archer I assume that I have to improve my release when I do not like what I see with the arrow flight (and probably rightly so as my form always need improvement)..... or we look to arrow problems or tuning..... etc.
accuracy is the sum of all the different factors that create dispersion, and although flight shooting is not focused on accuracy per se, the same problems that cause dispersion, can be included as likely suspects for poor flight shots.
can't help but think how often I have heard repeated that an archer likes a little set as it "makes for a sweeter shooter" . I wonder why? maybe one of those intuitive things that cannot be proved or unproved.
willie