What is impressive about EE is that he is
1) Underage for where he has played at every step of the way(one of the main predictors for future success)
2) He has shown consistent improvement in plate discipline as he has moved up the ladder.
3) 2005 at age 22 in AAA he has shown a large improvement. BB rate over 10% and SLG% in over .500
BTW, he was putting up better AAA numbers than the Braves super-prospect Andy Marte.