From the manual:
	Quote:
	
	
		| Your victory point score is calculated as: VP = (Total points from objectives) + (damage points scored on the enemy) Your opponent gets the same calculation but obviously scores off your destroyed and damaged units, plus his victory hex points.
 The 2 sets of VP are expressed as a ratio to determine victory. The victory result is then determined as follows
 
 Please note that partially damaged units count, so if you do 23 points damage on a 100 point AFV, your score 23 for that damage.decisive victory - your ratio of points is 8 times the enemy's or greater minor victory - your ratio of points is 2 times but less than 8 times the enemy's score draw - whenever either side scores less than 2 times against the other side.minor loss - your opponent scored a minor victory over youdecisive defeat - your opponent scored a decisive victory over you 
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 So you DO get points for routing units as they are almost certainly damaged. and as pointed out you are giving away a great deal of points in the artillery overload.