Resistance 2 also has this level up system and it works quite well.
It can indeed be annoying when some dude kills you because he has access to better equipment or weapons (or berserks in Resistance2), but on the other hand, it's a major "haha, SUCKER" when you do manage to kill him. So it works both ways (although for me, it's usually a "FFS, LEAVE ME ALONE /cries/"-response >_>)







