[Oztrich Boy]

You are so wrong.

• you are using short tons, The C-2 performance is given in 10% heavier real tons)
• "useful load" means payload, fuel, crew. The Herc's max payload is only 20 ton over short distances.
• The C-2's max range is 7.500 km, and it can carry 20 ton over that distance (36 ton over 4,500 km)
• The Herc's max range is 3,800 km (ie half the C-2)
• Any guess what the payload over that distance would be?

[CodeToad]

“You are so wrong.”

No, you are so wrong. Obviously, not a pilot.