They achieve 4 across by using different pitches on some seats, giving a two class cabin?
Sorry to question your ‘professional knowledge’, but the seat plan in the link above states that all business class seats on the Emirates A380 have a pitch of 48 inches, and are only 18.5 inches wide. Strange the width is so narrow if there are only 4 across, and no mention of a two class business cabin. But hey, it’s only a respected industry publication so what the hell do they know?
Agreed the middle business class seat on the 7 across BA A380 top deck would be coffin like, and the top deck as a whole would be preferable.