Actually, when it comes to any Devil Fruit that has the power of creating an element/substance, the strength of the user does directly effect how much they can output using the fruit.
Just compare the general area of effect from weaker logia users to stronger logias users
Loguetown Smoker (tiny area of effect) (Croc (small area of effect) < Enel (medium area of effect) < Ace/Blackbeard (large area of effect) < Admirals (ridiculous massive area of effect ie: freezing seas, massive light spam, meteor spam)
A perfect example of this will be the next time we see Smoker in a non-storyline jobbing fight. His overall output is probably on par with Ace's at this point. I'd expect to see him covering a massive area in smoke on a scale that he was never capable of before.