In actual use, no language was inherently superior or inferior. Every natural language, regardless of which one it was, had its strengths and weaknesses.
Natural languages capable of packing huge amounts of information into simple sentence structures often easily produced ambiguity, which hindered the accurate transmission of information.
Conversely, natural languages that did not produce ambiguity were usually highly mechanical and rigid, lacking variation. Their sentences were long-winded, and precisely describing an object required great length, making rapid information transmission difficult.
True words were not beautiful; beautiful words were not true. The good did not argue; those who argued were not good. The knowing were not broad; the broad did not know. That was roughly the idea.
Of course, all this was based on members of the same race. The same species possessed the same physiological conditions, so the languages born within it should have been equally useful to that species—apart from the distinction between one's native language and a second language.
But it was another matter between different species.
Asking humans to produce the Dragons' nimble tonal shifts was truly forcing the impossible. The vocal range involved in those changes between high and low pitches far exceeded the limits of a human throat. Dragons, meanwhile, were also unaccustomed to the human rhythm of one character, one sound—it was equally challenging for their throats.
And once spells were involved, there were even more complications. Spells cast through Dragon Language incantations required powerful vital essence to drive the throat—for instance, that "trough" character used by the Dragon King back then was one of the Dragons' methods of attack. Human flesh could scarcely endure such enormous vital essence, even with a Dharma body.
Nor were Dragon limbs suited to writing human spell sigils.
That was the difference in emphasis between the two