CC
No sarcasm-not this time. Firstly study of post 1038 kindly added by Beagle shows that even a legacy aircraft has managed it. A quick search suggests that the V22 has a max cruise speed of 270 KCAS so would not need to refuel at 90 kt. The hose speed range on the A330 family hose is 180-325 which should easily cover the V22. Indeed at least one member of said family of tankers has a clearance to refuel the V22. Maybe the GAO didn't look to hard! Not only that where was the evidence that the KC46 was any better?
As far as performance is concerned the ancient rules I referred to are those that were in force when the KC135 was built/certified. The A330 does meet all current perfA requirements and does not rely on balanced field calculations-it uses an optimised V1 based on the choice of take off configuration chosen.