Yasuo - Most OP Champ ever or useless?

Yasuo is probably the champion you need the most skill to play in the whole game. I've seen many Yasuos who have just NO idea what they are doing. But if you DO know, Yasuo might be the most unbalanced Champ ever. Being able to Mid- and Toplane, maybe even support due to W, blocking projectiles, chasing potential, Yasuo has all that. But again, if not played correctly it's basically a 4v5. What is your opinion? Can he really rek every other midlaner? Or is he just an annoying but not strong enemy that is easily killed in a 1v1? Let me know!
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