"Yasuo, Vayne & Lee Sin has ez counterplay! You just suck in fighting them!"
http://www.lolking.net/champions/yasuo?chartType=winrate&region=na&map=sr&queue=1x1&league=diamond#statistics http://www.lolking.net/champions/vayne?chartType=winrate&region=na&map=sr&queue=1x1&league=diamond#statistics http://www.lolking.net/champions/leesin?chartType=winrate&region=na&map=sr&queue=1x1&league=diamond#statistics
Then explain why would they still have high winrate & playrate in Diamond elo if they're this "easy" being counter-played?