Generic vs Humanoid animation. Why are they different?

Why the generic animation is different from humanoid animation? I'm new to animation and I can't figure this out.
I'm trying to create a top-down shooting game using an asset from the unity asset store. While trying to implement the aiming system from the model's aim animation, I've encountered the issue where the model correctly aims in the forward direction but when I switch the model and animation to humanoid, the animation slightly turns left.


I've also tried the mixamo's aim animation and it happens exactly the same.


The generic's aim, or shoot animation point in the forward direction of the model whereas the humanoid's turns slightly left. I don't understand why and how to tackle this?

Is there anything that I'm missing something silly? Plz Help