I actually agree with this reasoning. It is unlikely Taiwanese Torpedo counter measure will perform as good as Aselsan's system for the reasons you mentioned.
However, if we apply the same logic to Turkish systems w.r.t the American ones, citing similar aspects like decades of experience and head start in research, development and extensive field testing, several times bigger budget, some folks will get upset.
So, it is better not to go down that path. Instead, for now we just don't know the specs of Taiwanese system. Unless there are more info, it would be hard to compare.