There are a lot of 5'9 & taller RB that were very successful in the NFL.
There aren't nearly as many 5'8 & shorter RB that were successful NFL.
Jeanty may be a Barry Sanders or not...
We will see...
I can tell you this from being old enough to having watched Barry Sanders play football,
he was exciting & he broke many 20+ yard runs but when the game was on the line & the
Lions needed a yard or two, he struggled against a loaded box...