Honestly I think Zed needs buffs more than Talon
Now don't get me wrong I don't play either champion even though I have in the past so I don't really get an advantage by one being buffed over the other but.... I tend to win lane far more against Zed. Zed is objectively struggling more and is worse since preseason, and Zed also has a far higher skill cap but is struggling in a very generic way in that he is extremely gated behind Duskblade while Talon can still effectively lane bully at levels 2-5.
