The problem is that Riot has restored/buffed a LOT of ways to earn Energy in recent years but hasn't hit the assassins on their cooldowns as compensation.
Zed can literally Q 4-5 times per significant mage cooldown on a burst hit. And it's not like Zed's Q does no damage...
2-3 days ago I midded vs a zed as Morgana, and I had stopwatch.
He could barely even hurt me in lane..... until he hit 700g and recalled to finish a
. Suddenly went from hitting for about 15% of my HP to hitting 70% in one Q combo.
So then..... I'm stuck using W to farm to zone him. Not every wave has a cannon minion and the damage is lackluster for clear early game, so in the meantime, he can just roam and kill my bot, etc, because there's no keeping up with his cooldowns/energy bar, and chasing a Zed is stupid.
Game before that....was Cass vs a Talon. Talon didn't even stay in lane, and farmed faster than me, because after he picked off jungle Gragas and bot lane a couple times, he could just pass by lane, throw 1 skill at a wave, kill it, and continue his roam. He even joked/laughed around level 7: Don't bother ganking mid. They're behind. Because he was right. Through his ganks, constant wall jumping, and 1 shot clears, I was behind him.