Yeah, good idea. problem is, you can cheat this too. It's called being a mage in a lower lvl place after the low armor nerf. just hit heal when a little balefort knight is about to kill you. Rinse and repeat. you barely die, and with those huge health pools, your dmg taken/recieved will be pretty low/high, dunno what your counting by. then after your 'dmg recieved' is high, go and farm some mummies. then your 'damage given will be high'

So this is an example of your method of counting kills/deaths after i would use my method to cheat it.

Kills-25000
Deaths-1000
Damage given-100000
Damage taken-500000