Honestly, it isn't that strong. Notice how Zed is the only one left, so you had killed the rest of his team, and he didn't do that much damage to you. Did you have a healing debuff?
Also, you have 6 lights 4 rangers. That just isn't strong, and I'm guessing you had a lack of cc. Instead of 4 rangers, you could have just put in 3 wardens, and also had gone for 5 cost units.
I took the liberty to look at your composition and items. There are a number of things you could have done. Sell Twitch, put those items on ashe. Put in Taric for crystal synergy. Sell Aatrox and put that dragon's claw on an actual tank and replace aatrox with the one on your bench. Sale varus and put those items on vayne, perhaps the dragon's claw too. Then put in another warden in place of Varus, ideally Amumu. You could have taken out Nasus and put in Lucian. Lucian does so much damage, he may have been able to carry you before the mages you played against ulted.
I know this isn't what you want to hear, but Zed just isn't that strong in the games I've been seeing. I just think the lobby you were in had fairly weak compositions.