Well thanks for the info.
Though I would have to say that my personal experience doesn't support such a concept. For example, I have a few skills that I haven't levelled high (such as Surprise Attack which is still at level 20 for Shout) and I have never noticed that it misses a lot. There are other skills that most people only use for the debuff or whatever effect that should also shed light on this theory.
Please note I am not saying you're wrong, just cause I have have not noticed it, doesn't mean that it doesn't happen. Details aren't my strong point