New exp penalty system?

Is the exp penalty system changed?Just now i went to mp3 with my lvl62 mercedes and i suprisely realise that the exp gain is much lower than its original.I gain not even 1k exp per mob in that map  .Can someone guide me on the new exp penalty?

edit:just found out that if character level less than mob level by 20, exp will be reduce by half.Another ninja change....
edit2:It work for BOSS as well!!