Originally Posted by Superdude
I would say the complete opposite. Pitching, unlike hitting, is a skill that can pretty much be evaluated against any competition. If a guy's pounding the zone at 95 and snapping off a plus breaking ball against rookie ball hitters, you know that's gonna play anywhere he goes. Hitting is tough to translate to different levels just because it's so interrelated to the pitching.
This really isn't an opinion on my part. The folks at BA will tell you flat out that hitters are less volatile. The number crunchers have done reviews of top prospect lists and the hitters generally turn out to be the safer bets.
Here's a list of Reds top 100 hitting and pitching prospect during the past 20 years (according to BA):
Wily Mo Pena
Plenty of punchlines in those lists, but most of the hitters panned out to be every day starters in majors, most of the pitchers missed. A lot of that has to do with injuries, but that's why there's a TINSTAAPP acronym and not a TINSTAAHP acronym.
Jonah Keri did a good article
on the whole TINSTAAPP phenomenon last winter.