Possibly the difference in our heart of hearts is "profoundly gifted and talented." I read something online, maybe some social science idea, that languages allow our brains to grasp cultural concepts. I think it was when I googled Conlangs, Esperanto, & Lojban. Correlate that with something else I read online about handwriting balancing the hemispheres of the brain and "the mind remembers what the hand does" and it's possible that talent cultivated in a craft by a profoundly gifted person shapes their mind into "profoundly gifted and talented.". Their craft or talent (someone give me the word I'm looking for here) gives them a way to structure profound concepts. The consensus I read online is that gifted (log) is not defined by achievement or production. But that doesn't disprove that achieving some kind of production work might flesh out the profoundly gifted brain by nature, nurture, environment, adaptation...something. Go Mozart! It's your birthday.
My first impression of Dr. Ruff's levels is that her studies are the infancy of a new breed of giftedness identity that introduces the idea that giftedness effects development of personality characteristics during a person's growth and development not limited to cognitive abilities. I would compare her work to almost a public awareness campaign that adults need to really look at a kid as a whole child. Then again I would call Carol Dweck's entity theory work an assessment of the spectrum of perfectionism, in a way.
Did I say possibly? I did remember to say "maybe", right? My 2c. ATM
