Best Answer Rider of Rohan, 30 January 2016 - 03:04 PM
SinkDelay refers to how long it takes until a unit starts to sink into the ground after they die.
DestructionDelay is how long it takes until a unit is completely gone from the game and should be longer than the SinkDelay (Otherwise they'll just pop off the map)
FadeDelay refers to how long until a unit will start to fade once the condition is triggered (which in most cases is a timer finishing).
FadeTime is how long a unit will take to fade out of the map one the fade delay is finished, it should be the same time as DestructionDelay I think.