Excellent presentation Nick....I feel vindicated on my comments about the Osprey versus the equivalent helicopters.
The one thing you did not address was the airspeed of the Osprey in the external cargo mode. How does that affect the numbers? Commonsense says the external load being carried will determine the airspeed the machine can fly (in general) and thus any airspeed advantage the Osprey had would evaporate like fried chicken at a family reunion.