Dude. Just no. Zed has tons of counter play and he is a very high skill cap champion. Zed was my personal second champion and I still haven't completely mastered him. He is my second most played champion after Yasuo. And the reason you cant play him so good is because (like I said earlier) A high skill champion that takes a lot of time to master. Its easy to counter zed (I have destroyed zeds and have been destroyed as zed). Yeah sure people who play him great are op. But thats a crap excuse. My friend is op at any support mid. I have seen a Nami mid get pentas. So any player that has mastered or is even good at the champion can be 'OP'. You can play any champion in any lane and be op as long as you put in the time and effort to learn that champion. You don't like zed because you cant play him and you have been destroyed by him before. That is no excuse to have him nerfed right now.
-Dark a Zed and Yasuo main.
EDIT: also like JOJO9800 said if you cant counter him just stay in bronze or go play normals or ARAM (note this is not an offence to ARAM players, I love ARAM myself)