When I was in my teens I had an acquaintance who played classical guitar. Bach, Mozart kind of classical. He had fingers that would not only handle a 2" wide fret board but could span 5 frets. It looked like a tarantula crawling around as he played.
My physical limitation is short stubby fingers. At least that's what I tell myself. David practiced more in one session than I practice in a week but I tell myself it was his fingers.