I think the pitchers are harder than the batters. No Arcia didn't make it, but the Twins had a bunch of hitting prospects at that time with Arcia, Rosario, Sano, Vargas, Santana, Kepler and Polanco all debuting 2013-15. Overall, that was a pretty solid group.
The pitchers seem to be more flakey, though they seem to be a bit more predictable with the current front office. I think towards the end, Terry Ryan understood his biggest flaw with his pitchers was that he historically struggled to get guys with velocity and strikeout ability. He tried to correct that with the Romero, Gonsalves and Graterol types, but he hadn't figured out how to balance the command issues that come with those types of players. He got a good one in Berrios though.