Yep. The only thing you can do is categorize it. Which is cheapest. Which looks the best, Which is easiest to install. But the debate is always about which is strongest. Who knows and how could you test it unless you are an engineer in a lab.
As I understand it is because the floor is a structural part of the chassis, the weakest connectors are bolt ons.
Then the weld in connectors.
Then connectors welded TO the floor.
And the strongest is connectors welded THROUGH the floor.
The last one is the biggest PITA to do because the fitting has to be very close. IIRC I was told no more than a 1/32 gap. On a long piece like that fitting it will take significantly more time than welding it out.
Again, as I understand it, welding it through the frame changes the way the floor transfers and transmits the loads. The floor actually pushes on, and pulls against the tube rather than pushing and pulling on the welds if that makes sense.
