Thanks Snow j and men.
Have you revised your comparison chart to reflect volume as measured with water in all bags?
As of this edit - yes. See here.
I bet there is some formula to calculate potential maximum volume under deformation of a flexible rectilinear container. And I bet its been known for as long as saddlebags have been made.
Have you had the opportunity to ride with all of the bags in your comparison?
No - some like yours were just review loans (Wolfman EDS reviewed also, but did not list); Kriega's were on a mate's bike. The other three I did- or do own.
So, to clarify the maths, that is 3 out of 5 in the table owned and used - and yet a 'Harold Olaf Cecil
' still made allegations to the contrary a few weeks later on the Adv Spec FB page...