What sort of legal advantage do you see them profiting from here?
Not legal, purely monetary of course. Really surpirised it has taken this long for talk of bringing a damages action against BA to arise. Just look at the Air France A340 which went for and adventure off the end of the runway in Toronto last year, I believe that the passangers of that flight have already issued proceedings seeking
huge damages, inspite of the fact that most walked away.