Hard to sayThese boats are probably also just pushed really really hard! I reckon in delivery mode they would have all made it fine, it looks like the class 40 sailers can really put there foot down
The second/third tier of Class 40s are the amateurs living the dream and young guns trying to come through.
Usually older boats, smaller budgets, less fit sailors, less training miles. The early fronts would have been tough if you weren't 100% ready. It looked like a few had preparation problems (esp electrics and auto pilots) that were found out. And a few possibly found the dream didn't match the reality.