F is still F, whether you have a suite on A380 and new 747 or the bit older stand alone seat (full flat and wide pitch) on the "old" 747 and A340. Food, beverage and service is the same on all four!
the stand alone seat is much better than the old angle flat J seats on 747/A340 and also better than A380 J, which is also full flat, but a bit cramped with much lower pitch and the usual J food, beverage and service