Nick,
I never doubted if the V-22 could fly OEI. What is your take on its ability to withstand a single engine failure at a high total power setting? With both engines running and the torques matched the connecting shafts see little or no torque. Should one engine suddenly quit that shafting would have to very steeply ramp up to match the torque required at the failed engine prop/rotor gearbox. That would be similar to going from full right pedal to full left in less than 2 seconds along 40 feet of shafts and couplings. I have my doubts as to the V-22’s ability to handle a sudden engine failure.