LB is 3 times more toxic than Zed will ever be, she's bursts in less than a second that's why she needs it.
Zed instead, not only has this mechanic on ult AN ULT FFS, but needs to commit for more time than LB will ever do.
It's not fair in my opinion, trust me that this nerf is not changing anything for most of Zeds matchups as he only commits for less than a second when last hitting someone with ult or killing someone when fed because he doesn't need a prolonged combo to have reasons to stay more than half second.
The only damage done is limiting Zed's combo arsenal by 1 because there are certain plays that need the instant ult back W back in to function properly, with this change it's just a big "INSERT SKILLSHOT RIGHT BEHIND YOU" target over the screen because he cannot dodge not even by predicting, there are obviously ways around it but they are an utopia, it will happen only in rare scenarios.
So, why is Zed being nerfed before LB on a mechanic that the latter has on a basic ability that does instant huge AOE damage that can be used twice with one having MORE damage than the previous on a 1\10th of the CD Zed has? Again she also bursts 3 times faster than Zed does.
If it wasn't enough, if LB fucks up she becomes invisible and she splits into 2.
Who's the slippery uncatchable burst-all in less than a s bastard now?
LB is 10 times more broken than Zed will ever be, the only thing that Zed has over LB is being gated by energy, which is only good for lanephase.
LB is also AP and has access to the most OP item of all, Zhonya's OPbaitglass.
LB's only limit is mana, and guess what i do when i see a LB with 200 hp and a blue buff?
I give up on chasing her if i am not someone that has a targetted ability, because there's no way to ever catch that b!tch.