If I’m correct, the first was a roll over, and after thinking about the second, I wonder if, for whatever reason, the trailer brakes did their job of stopping. And what damage might have happened to the truck with a standard 5th wheel hitch?
I think I only know a few incidents.
Pin box cupping from adapter. It is unknown if the pin box was structurally strong enough.
The roll over you mentioned.
Clark2262 hitch buckling. Was that the rollover?
and this current incident of the hitch buckling. Unknown what caused this. I have only seen the few pictures and I see a lot of speculation.
So far I think there is a decent track record. I have seen a few post that it is the truck bed that is holding most of the weight of the hitch and is why the base is so wide. (I don't know if this is speculation or not) what makes this a bit more believable is that when you think about how the Anderson is mounted. It is designed to pull up on the ball as Porthole mentioned before. when you pull up and tighten on the goose ball you are displacing or pre-loading the frame of the Anderson on the truck bed and locking it in that position. I would probably have to investigate further on this to make a final determination as to weight distribution.
With the goose Box by Reese you can tell that the weight is sitting on top of the ball just by porthole mentioning the issue with getting the ball out of the fixture because of the damage to the area where the release lever is.
I do know that the way the Anderson is designed that even if your goose ball is taking the weight something has to take the lateral forces when you start moving turning and stopping and that is the upright angles of metal. Don't mind me I'm just analyzing the set up and some of the few incidents. I still really like the idea of the Anderson.