[{quoted}](name=Very Toxic Jinx,realm=NA,application-id=3ErqAdtq,discussion-id=eoXfotwB,comment-id=000100000000,timestamp=2015-09-15T05:42:58.415+0000)
If a champion is OP, he has a 60%+ win rate and is subsequently nerfed
, earlier in the season AD 
an easy champion with 55% win rate isn't op, he just happen to be easy to play like fiddle was for 2 years.
an hard champ with 50% win rate or more is op because the amount of skill he needs needs to make him bad for 50% of the community. Lee sin had 47% win rate and was still nerfed.
Now vayne as a "skilled champion" has 51/52% win rate with 35% pick rate meaning that not only vayne mains play her but everybody, her win rate should be like the in the end of season 3 46%.