Well it makes sense for them to be superior in at least one attribute. Because the rest aren't much different then the average. I think that it'll affect people's strategies with them, encourage a hit-and-run and blitzkrieg style.
The Huns rode on horses most of their lives and were reportedly disfigured by this. I have also heard that formations broke before they charged, because the Huns stunk so bad
. (sorry love history and I'm even minoring in it so I jump at a chance to talk about it)