Your statement alone is clear proof that you have no idea about food quality - or presentation for that matter.
I haven't flown BA or AA - so I won't say anything about those two airlines. However to I have flown QF and EY substantially. To say that EY has better food is a clear indication you don't have any idea what you're talking about.
The food provided by QF (in the air and on the ground in fact) is in a different league to that provided by EY.
I've had more than my share of 'Big Plates' and 'Small Plates.'
The truth is that QF F food is simply J food served as separate courses with minor changes, often simply the description. The tasting menus are mediocre at best.
Have you every compared a QFi J and F menu? Go play spot the difference and then we'll talk!