Nidalee vs Quinn, Zed, Talon, etc

Quinn, Zed, Talon, etc - all dish out easier and much more damage than Nidalee has (unless you hit spear at max) at every stage of the game. Ok that would be fine except they are all more mobile/have better escape mechanics and they are allowed to get . They are all way better picks

On top of that (except Quinn), they all have bigger HP and more resistance than Nidalee. You can say, well she has heal, well that heal is trash since it basically forces you to change to normal form and it takes roughly 1.5 sec to do all that with cast, that's kinda lame.

Why are AD assasins and some assasins allowed to have so much damage without hitting the skillshots involved

I'm not saying buff Nidalee, but other assasins need to be tonned down