I think you'll find the QF seats are slightly thinner and to me, actually appear a bit more roomier.
Also DJ have a config of 8/168. QF is 12/156. DJ has less storage (no fwd coat locker I recall) and I wonder where they manage to fit all the emergency equipment as QF appear to have more equipment storage lockers forward? dog boxes perhaps or the overheads?
With less locker space and 8 more pax, finding a place for all the hand luggage must be an art in itself on a full flight.