WTF? "draw is a victory for the attackers"?

Yoott: its supposed to be draw goes to the defender.. otherwise the attackers would just hide and play for a draw..... at least the defenders are supposed to be the dug in ones DEFENDING...and a successful defense = retention of the land....
imagine medieval battle....... knights attacking a castle.. but instead they do the Monty Python thing and run away... but still end up with the land even though the enemies are still inside the castle shooting cows at them..