Originally Posted by
ExXB
Mark, I think you are thinking of the B787 (and possibly the A350) not the A380.
Yes, it's become a bit of an urban myth that the A380 has a higher max diff than the other tin Airbuses and Boeings. It doesn't.
The only airliners with a max delta of 9+ psi are the 787 and A350 (and of course Concorde).