Gup, might I ask you if (with your theory) all other skills are either similar OR filled out? Important (IMO) because, if I'm reading your idea correctly, you're describing a 'growing kicker' (one being built over time and not the finished product)... in which case the difference in other factors combined with agility could effect the outcome. Lemme try an example;
Kicker A has 57 agility, 89 strength, 101 kicking, and 50 vision.
Kicker B has 57 agility, 80 strength, 101 kicking, and 70 vision
(All other SP's can be doled out elsewhere to create these 2 kickers of the same level and age.)
Perhaps Kicker A's kicks tend to go much more sideline-wise than kicker B's does... in which case you could make an argument that either less strength or more vision could be effecting the outcome. I only ask/say all this because I've made the same mistakes when comparing dots myself... not knowing exactly how each skill works with the other to create an overall effect during a game. Qb's that throw too many 'bad throws'... WR's that drop too many passes... punters that are too erratic in their punting distances... kickers that can't seem to make kicks at a certain range... ect, ect, ect. I found that trying to tie it to one skill only tended to throw off my assumptions/observations. Just tossing that out there as food for thought.