[Plat+ statistics on ADC in ranked.](https://www.leagueofgraphs.com/champions/builds/adc) Two ADCs have a combined pick rate of 68.8%:
* Kai'Sa: 34.8%
* Ezreal: 34%
The next most popular ADC is Vayne with a play rate of 16.4%; less than half that. Speaking of Vayne, she is banned in 30.9% of games.
What about the 4th most picked champion? Jinx. She has a fairly high but not extreme pick rate and pretty low ban rate, but she has a win rate of 54.1%; currently second only to Sona for the highest winrate in the game period.
Normally one shouldn't take stats in a vacuum, but all 4 of these champions are extreme statistical outliers in one way or another with a perfectly reasonable sample size of games.