I know a bunch of people from Japan who do that. However, now that I speak decent Japanese myself, I understand it's mostly English phrases that have caught on over there ("lucky" and "perfect" are two that immediately come up; I'm sure there's some idioms as well, but none immediately jump to mind).
Kill 1 man: You are a murderer. Kill 10 men: You are a monster.
Kill 100 men: You are a hero. Kill 10,000 men, you are a conqueror!