John, my gut sense is that the boat can be made sufficiently durable for the use and insufficiently durable with misuse. The nature of the materials are different, the designs can be very different, and the range of forces that can damage kayaks IN USE are so large that they probably render the differences moot. In other words kayaks landing on kayaks in 4' dumping waves will do damage, kayaks falling off of car tops will get damaged, kayaks flying into rocks with or without their occupant will get damaged, regardless of the construction. For a wood/glass/epoxy laminate to be as durable as a 60#fiberglass boat I doubt that it can weigh 40#. Maybe 50#. Some laminates can withstand damage without catastrophic failure,,some might be built for great rigidity but fail catastrophically. About 5#of a glass boat is non structural gel coat, it's useful but not vital for structural reasons, so if you get your average glass boat and remove 5# you're making a better apples/apples comparison. If you start adding up the stock features on glass boats and compare them to the sparser features on a wooden boat the weight differences start looking less significant.
Most glass boats can flex a couple inches in some areas without a catostrophic failure,,I don't think a lot of wood boats can do that unless they were built with that in mind. So some injuries that might result in large area softening of the glass might result in a puncture of the wood boat.
I've seen some glass boats with punctures and catostrophic damage, same with wood boats,,most of the time the circumstances that would damage one would damage the other.