Sorry for the confusion. I just want to be helpful.
I scrolled down the chart to the pictures to see the trailer in question being weighed with weight
distribution bars attached and apparently under tension due to the bar wow.
I took out my magnifying glass and I believe this trailer has a Hensley Arrow installed. With this hitch it would be possible to unload the bars with them attached. It would also account for the extra couple hundred pounds of tongue weight
Hard to believe someone could load this trailer a thousand pounds more than my wife does!