I bring this up because Crumbz just mentioned her winrate wasnt high so shes balanced on the desk.
The fact is that Senna's "50%" winrate is because support Senna has 48% winrate and that brings the 52.7% winrate of Senna ADC down to "50%"
Senna isn't balanced and also her overall pickrate is 23.2% being pretty evenly split between adc and support https://www.leagueofgraphs.com/champions/stats/senna/adc
