It could be argued that most western system do also, anything below a D is a fail. Depending on how you look at it we either have a 5 or 8 level system if +/- is used.
in the UK a C would be considered a good grade even with the grade inflation -at uk unis a third aka gentleman's degree Is the failing grade
When I was at school in the UK getting an A meant you where really good and a triple A at A level was super rare and less than you would need to get into Oxbridge