Credible and reliable data for such comparisons does not exist, unfortunately.
Paragliders who aren't idiots don't spend much time at 40ft AGL in weather conditions that can cause a collapse. And not every low altitude collapse is fatal. Spine compression injury is more likely, and they wear padding on their butt to minimize that (some even have airbags).
For better or worse, the main predictive risk factor in paragliding is personal attitude, and I suspect it's the same in parachuting.
