Ok but they both had parachutes and survived. You're talking about the safety of the plane/trapeze.
yes the people survived, but that was never in any doubt,
the Airplanes should have had a remote pilot/ballast, to account for a shift in CG when the Pilots bailed out,
custom air-brake wasn't nearly enough.
I mean a sudden shift in CG has brought down many a Airplane, that's primarily why Cargo Planes spend so much time strapping things down,
so again, there is so much you DONT see, and that's what makes the insurance/production safer, and not as risky.
so Trapeze has a Net, from the ground you barely see it,
any Acrobatics show has hidden wires controlled off stage so you dont see it,
same here, I think they didn't calculate everything properly, or had a backup in place,
and that's why it went wrong, back to the drawing board, as its clearly possible with one plane.
James Bond once did it without a wingsuit. But these guys did it for real.
www.smithsonianmag.com