Salmo,weight has more to do with the frame material and configuration.
tubes are goihng to be pretty close in weight,the big difference here is the Tube material,weather it be PVC,hypalon,a bladder system or the BMW version Urethane,if all lengths are the same ,weight will be with in a few lbs of each other asa far as the tubes go,but it tough to make a packable frame that has a standup on it,unless you're "Timberman".
you'd have to keep you're pack trips pretty short.
All in all I guess you have to decide what you main uses are going to be....and BTW I do make frames...when I'm not fishing or at my real job or doing Honey Do's......I need to fish more......Os