The SQ 747 left Dublin with less than **** all payload wise from Dublin, although "full" as in all positions with pallets on them, never much weight and was never any where near any of its takoff limits.
The same goes for the AF 747 which after all does not cross the pond from DUB only has a short hop over to CDG once a week after it picks up litterally a few tonnes ex Dublin.
The flightdeck crew on SQ seemed to think as well that a Pax 747-400 or a 777 would have no problem with Dublin but that the issue was crosswinds on a wet runway. I will leave that last bit for you technosexuals to post threads and suggest why the flight deck are wrong but you are not hehe.