I can grant that you *might* get a general idea about the width of the nose from a skull, maybe from measuring where the connective tissue hooked up to the bone, etc., but it doesn't explain the skin coloration or the texture of the hair, etc. A telling line is:
"...and their knowledge about the Jewish people of the time to determine the shape of the face, and color of eyes and skin."
If they used source material for those detials I would be interested in knowing what it was. Once you take away "the shape of the face, and color of eyes and skin.", there isn't much left.
The bit about the hair is pure speculation. Though I understand Jesus didn't take the Nazerine oath to never cut his hair, he also lived in a time where "long" was waist length and it was shameful to shave your head as pagans often did. Our idea of "short" and "long" hair comes from post-WW2 military anti-hippy rhetoric. Historically shoulder length hair really wasn't often considered "long".
To much diversity at the time, too much racial drift since. This is a educated guess at what Jesus looked like, and I don't hold it to be any more authoritative than Da Vinci. More effort went into the guess, I suppose, but it is still just a guess.