to PBL
http://www.aircraft-charter-world.co...sia/taiwan.htm (Taipei Sungshan runway length given as 8500 feet)
The Transasia A320 in Taipei went off a 2575 meter long runway but the grass and the ditch finally stopped it with no injuries and the plane went back into service after the necessary repairs.
So I am not certain the TAM flight wouldve stopped on a 2400 meter runway either. But it certainly couldve resulted in a minor overrun per TAipei instead of being the calamity it became. So yes I agree that a 2400 meter runway wouldve certainly helped the situation enormously. However, technically it probably would still have been an overrun.