Killing horses don't give k/d.
Interrupting plated Xbow's reloading doesn't give k/d. (well 4-5 hits later it does, but when you are spreading shots between 3 of them it takes awhile)
Hamstringing the enemy while he is engaged with your melee doesn't give k/d when your teammate cuts down the stunned opponent.
Headshotting archers that bragged about their 3:1 k/d killing cloth peasants does though But it does roll a nice x5.
Not to mention, I get a real kick from the hundreds of times that the enemy has shouted out "Pappy Noooooooooo!!!!" when they are trying to ride their pony around the map.