"Killed" figures in GFF might actually not be dead. A roll might have them still in the game.
Morale works differently, because there aren't units in the same way.
Pull up the one-page rules side-by-side--there isn't that much to compare! But it is true that it is easy to assume something carries over from one game when it doesn't. We forgot to apply the stun roll (to find out if figure is just stunned or dead.