Minor League ball has a report on the best players this year with and without an age adjustment.
http://www.minorleagueball.com/2013/5/10/4317672/gapper-report-5-10-13
Some notables:
Andy Burns is 16th on best hitters with age adjustment included.
He's also 2nd on the top 20 w/o age adjustment, Pillar is 9th and Negrych is 16th
Aaron Sanchez is 2nd, Osuna is 12th and Syndergaard is 16th on best pitchers with age adjustment
Lastly, Carreno is 4th and a pitcher not mentioned here who plays for the Bisons; Neil Wagner is 11th.