"Lee Sin is OP, low elo brings down his win rate"
Meanwhile, he has a 47% win rate in diamond lol. Lucian has a 46% win rate. Jayce has a 46% win rate. Vayne has a 47% win rate. Leblanc has a 47.7% win rate. Master "Noob Stomper" Yi has a 48% win rate. Zed has a 49% win rate. Janna has a 55% win rate in diamond and 34.6% popularity in diamond, but people aren't happy about her nerfs lol. http://www.leagueofgraphs.com/champions/stats/diamond/by-winrate
People should stop acting like they are better at balancing games than professionals running one of the most balanced games on the market. And to the quote "win rate doesn't mean anything," lol it literally is how often that champion will win if played. The average diamond player will only win 49% of games with Zed. So much for OP.