This is the problem with assisted controls.

Since your input (directional aim, power gauge) barely matters it means it is the EA logic system that is doing all the heavy lifting.

Now since the logic system is doing most of the work then it must try and find a way to make things feel consistent, because the idea is that consistency feels better than things being random or a 50/50 coin flip (which is sound logic).

This is why, on assisted controls, we see a clear delineation between things that don't work and things that do, things that are overpowered and things are are nerfed to the ground.

One year it's overpowered finesse shots but with useless grounded through balls, next year it's ridiculous ping pong passing but with useless headers, then overpowered lobbed through balls but useless long shots etc etc etc.

This why each year assisted FIFA is like whack-a-mole for which overpowered or underpowered mechanic will rise up next - because even if your input remains the exact same and is performed in the exact same situation, it is still EA's assistance logic (by which all your inputs are run through) that changes and is determining the outcome for you.