I have been working with composites for over a decade and have done many of my own strength tests on components.
I'll just say... it takes a lot of force to separate a well made composite panel.
There are a multitude of methods that can be used to mount a camper to a subframe. It is true that some methods are technically stronger than others, but I have seen very little evidence of failures due to delamination alone.
As I have said many times before in this thread, it's your truck and you should do whatever you feel is necessary to make yourself comfortable with your own build.
Having said that, saying that everyone else has it wrong and only you are doing it right is, in my opinion, a bit of a stretch.
Not adequate like TC suggests
