Maxeemum,
I see your point, up to a point! However the sorts of speeds in question are so high that they would yield eye watering rates of descent! I don't imagine many pilots would push much over 100 kts to try and get some range.
Brian, I would hope that the failures happened sequentially so you would have slowed below Vne before being in autorotation. Interesting point though.
Old Beefer, dunno mate!