Built in transition to Cargo? So the 747 is modular? Did not know thst. I think they were under pressure to keep the A380 weight low, so much they switched to aluminum instead of copper wiring, and I hear it is a maintnance nightmare because they break in the bends.
The 747 was built with the pilot’s cab on the upper deck, so the nose can be opened for cargo.
380 has the lower deck cab location, so not so easy to use that front end for loading massive items.