PSA: "Playrate" has NOTHING to do with experience on a champion
10,000 people could have played the champion 1 time, giving the champ a 10% playrate (not real #). 1 person could have played the champion 10,000 times, giving the champ the same exact 10% playrate.
Average games played by playerbase tells you the average experience level of people playing the champion, not playrate. I see so many arguments, "well the champion has a high playrate which means that people inexperienced with them are playing them" and it's completely false. Likewise, "this champion has a low playrate, meaning only mains play them" is equally as wrong.
So when people say, "50% winrate is OP because their pickrate is high" is completely illogical. Ok, cool, their pickrate is high. But that champion is still #1 in terms of average games played. Meaning that champion's playerbase is more experienced with the champion than any other champion, and you think 50% winrate is too OP? That's pretty far off from your thinking that noobs playing the champion is why their pickrate is so high. Makes no sense whatsoever.
I'm not sure why the community has gotten on this train of thinking. But it's just wrong. And we need to stop.
Tl;dr: Pickrate has nothing to do with experience.