The other thing to consider is that like with pitching (ie velocity) you can have outliers on both sides. Pitching - great velocity or elite spin, but no command or other quality pitches, and they can fail even in relief role. Or have all the tools and still not succeed. In the flip side you can have guys who don’t pitch hard or have elite spin and succeed. But velocity or spin are more likely to predict success, not will predict, but higher correlation.
Exit velocity (launch angle, or barrel rates) are more correlated with success as hitters, although those without higher EV or those launch angles etc will succeed but less likely to do so.
Black does things well like pitch recognition and contact thus higher BB rates and lower K rates. But he will likely need to add more launch angle or EV to be more consistent at the mlb level, and “outliers” like Paredes show how. But I agree we can’t assume Black will just produce like him. Hopefully his bat and power will improve with LA or EV without taking away what he does best.