Not sure who added the 50% extra damage for vet 3 sniper, which they claim incorrectly allows the sniper to one shot any enemy unit - In fact, vet 3 sniper can never one-shot a knight's cross holder if at full health. I believe it will do 50% damage to a KCH if the KCH is vet 1 or 2, and slightly less than 50% if kch is vet 3 due to a slight increase in their health pool from vet 3.