[Mancandy]

Admittedly, I haven't looked real closely at who is labelled as inconsistent and who isn't, but it seems like I usually see one dimensional players get that in their scouting report. A guy who can hit for power but not much contact, or a guy with a good contact rating but not much of an eye. Basically, guys who are inconsistent in their ratings.

And like a previous poster mentioned, personality may play a role. Especially work ethic. That is, assuming there's no hidden consistency stat.