In less competitive leagues especially on teams that don't understand much about playing time, you will find high-scoring players. If a crappy team has one decent guy who plays 48 minutes a game, he is bound to score tons because A) he never sits and
the GE tells him to shoot every time he touches the ball as he is option a,b,and c in his team's offense. I think it is more a function of minutes played. Good managers understand about limiting a player's time on the court. If a guy play 24 minutes a game, he probably won't be dropping in 45 a night.
For an example of this, check out Thai D.1. The top two guys average 44 and 46 minutes per game. Their GS are inept and respectable (going down for sure) but since they are about all those guys have they are averaging 31 and 28.8 ppg.
Once I scored a basket that still makes me laugh.