Next, its a game, doesnt need to be realistic, just consistent so everyone plays by the same rules throughout the game. The strategy of the game is to best use whatever rules are there so that you are ahead at the end of the game.
Its all interperatation of the what the rule might be trying to do in game terms. Its subjective as to what it might actually represent in real life terms.
I was attempting to tack on a rider such as this to my last post, but it ended up being worded very clumsily and didn't make the cut :) Very subjective as to what each roll (or any other game mechanic for that matter) signifies. For the instance at hand I don't think too much stretching is required to have the mechanics reflect what may occur on a medieval battlefield (goblin-mounted ostriches present or not ;) ).
Half the world starves,
Half the world bloats,
Half the world sits on the other half and gloats