There's no "balcony", as some else said, and there certainly aren't two corridors on top of one another. Why doesn't someone use their Photoshop prowess and show me where there are two decks, or a balcony, or a movie theatre, or whatever else people see in that picture.
Because no one cares at this point. The evidence is there, and the official size is there. That you can find instances of inconsistent scaling, assuming those are even that, doesn't mean the rest of the evidence dissapears.