Nothing like a transatlantic feud!
Since when was the A380 to compete with the 747, the A340 is already handling that one quite nicely, as is the A320 vs 737.
Have to hand it to Airbus, that'll be 2 A/C they build with more than 2 engines, how many such beasts do Boeing manufacture?
Concorde's success, I believe, was due to it's limited numbers, had every Tom, Dick & Septic had them then it would have failed.
Of course, to operate such an A/C takes money, something which Panam didn't have!