That wouldn't surprise me with similar but different languages. According to half the internet Indonesian and Malay are exactly the same language, the people claiming this have hopped across the border and had no dramas whatsoever understanding and being understood by other people etc. Meanwhile my sister and I are learning Indonesian on Duolingo and getting mildly frustrated at words and grammar that varies (sometimes quite drastically) from how we remember hearing things XD
Are they actually non-actors or just different types of actors? I mean good actors are good actors, but I feel that sometimes the idea of normal/good we develop is based on what we're looking at most of the time right XD

:<)
I merely meant 'normal' people that are asked to star in a movie ( without acting experience ). I get your point though. Non-acting can 'act'ually lead to a better performance. That's why I often love young kids in movies, just being themselves, instead of acting.