User blog comment:Blackendedsoul/Devil Fruit Limits and Physical Ability/@comment-3119203-20120123133815

As Crocodile stated, it isn't which fruit you have, but how you use it. I think that every fruit is equally powerful, and that the only limit is the user's abilities. For example, a novice with Akainu's DF can produce infinite lava but wouldn't able to control it. Someone with the Suna Suna no Mi would be able to turn into sand, but probably couldn't dehydrate people or create sinkholes. As for things like Zoans and Paramecias, the fruit is directly dependent on the user. Zoans are onvious, but Buggy's part count is probably limited by how many parts he can keep track of (which is why he hasn't split into dust-sized particles yet), and Luffy's abilities depend on his sheer strength and training with the fruit. I doubt someone like Usopp would be able to perform a Gomu Gomu no Rifle or even a bullet: remember, it takes quite a bit of force to send your arm back like that (its a rubber band, not Plastic Man). Whitebeard's quakes, I think, depend on the physical strength of the user. A weak person=weak quakes.

So, in a way, Soul, you are right, but logias aren't determined by the physical strength of the user. Example is Caribou, who used his fruit extensively and had the physical strength of a kitten.