Pecota has known issues with guys that have very little professional experience. It drives Pecota crazy since their projection system uses comparables. To quote a chat from a few days ago:
John Barten (Indianapolis,): Peeking through the PECOTA projections, one player sticks out like a sore thumb, Jeff Bianchi, who has 140 career AB in the Arizona Rookie League and is projected for a .299/.369/.422 ML line. Any thoughts?
Joe Sheehan: Guys who have one partial season in professional baseball give PECOTA heartburn. It's best to take those lines with an entire salt lick.
I don't know if the player in question fits the 'one partial season' mold but even at slightly higher amounts of professional service time I'd assume there would be some problems in finding comparables.