You make a fair point. A person's movement can demonstrate that they have the potential to generate power, but I do not agree that is guarantees it.
I understand your point, but what that movement tells...that is in the eye of the beholder.
The initial statement about impact is what I was questioning. Impact has to deal with how that power is transferred to a target, there must be two objects for an impact to take place. Just like fighting and solo demonstration, body coordination and potential power generation are different than actual impact power and transmission of force.
Yes, they are different but closely related. It's pretty easy for me to very reliably say after a short time watching someone move what kind of impact they can generate.
If the person demonstrating the poomse also performs breaking skills they may very well be able to generate power that can impact a target.
Do you think that otherwise they won't?
However, the ability of a poomse champ to perform a breaking feat will differ greatly from someone who performs competition breaks.
Does not follow, and those two groups are not mutually exclusive - quite the opposite.
Also, a person who performs in competitive breaking will not be able to strike a heavy bag or person as efficiently as a professional boxer.
Also does not follow. There is no reason why competitive breaking participation would preclude efficient striking against a bag or person.
Each skill is unique and sport specific.
Each skill is a specialism within the larger realm of striking. One specialism within that realm does not preclude another. There are skill aspects common to all the specialisms and many other skill aspects are transferable across specialisms with modification. The specialisms are not learned in isolation. You don't start out and think 'I am going to start today, from zero, and become a breaking champ'. Nor do you start out to become a poomsae champ. You learn the art Taekwondo, and part of that is learning to strike and transfer power to a target.
My point is a persons movement can infer a lot about their potential but it doesn't guarantee anything.
Again, in the eye of the beholder. There is a reason high level poomsae judges are carefully selected.
I've seen some impressive demos and heard other spectators comment about how skilled and dangerous the demonstrators appeared to be.
Were the spectators experienced high level poomsae judges?
However, I've sparred these same demonstrators and know the difference between a demonstration and reality.
Then what those spectators judged to be an impressive demo may not have actually scored well in international poomsae competition. What pleases a crowd is not the only thing these very experienced judges are looking for.
Neither way is right or wrong and as you mentioned the goal of a poomse champ isn't fighting ability. The poomse champ in the op might be able to transfer a lot of force to a target via impact or she may not, imo you can't judge that without actually seeing her hit something.
Some people might not be able to, but a good poomsae judge will. It's in the eye of...well,you know.
But you can see her athleticism, coordination, and ability to perform the technique.
Amongst other things more important to World Championship success, yes you can.