Bart,
I will type slowly to help you understand.
On flights where the 777 can carry it's full payload, it will carry much more cargo than a 380. And it does so very efficiently. But the 380 carries another 166 pax.
When the 777 flies more than 12 hrs, it has to offload payload to onload fuel (with me so far?). So when it flies (flew to) BNE, for example, or 14hrs, it is only carrying 42 to 47t, depending on time of year. On these flights do you still think it's carrying 16.7 to 23t with a full pax payload as stated. Now Nolimit likes to mention how the 380s lack of cargo is hurting LAX. Hmm, 16hr flight, the 380 is still carrying 60t of payload, and the 777 is back to 35 to 42t. Have a guess which one the cargo is on?
Now I know you don't believe me. In fact you may be reliving that horror of finding out Santa does not not exist. But you can check for yaself. Ask the Capt to show you the load sheet. Subtract the DOW from the ZFW. That's how much stuff you are carrying to pay for the flight. The load sheet also shows pax weight, which is pax weight without bags. It shows cargo weight, and this includes the baggage weight.
Now that's not technique, but just how it's done. You should have an understanding of this before your command. But, that hasn't seemed to hold others back.
Now, do try and calm down. I am sure it's not your fault you don't understand these things as no one told you.
The don