Nope. So far from what I've seen neither is, as Jauron had hoped "separating himself through competition".
JP moves better and throws a better ball, Holcomb has a better head. That being said, will Holcomb ever get a better arm or start moving better? Nope. But JP does have a chance to get a better head if he plays. To me... if JP survives the preseason uninjured he starts.