Really lucky they did not end up like FDX at Narita, just pure luck.
I can't believe that 10ft difference in flare height is enough to total an airframe. Most jets only give you a firm landing if you flare a bit late. And if you carry a bit extra speed crossing the threshold, many will give you a greaser.
I wonder what else is behind the trickiness in the MD-11. It can't just be the crews when so many have made the same mistake with similar consequences.