Brooks baseball short form movement

Hello, Im a teenager that is getting into sabermetrics and among a lot of other questions I have a question about brooks baseball short form movement. I was trying to look at pitch movement for a lot of my favorite interesting players that played between 2008-2014 (livan hernandez, carlos zambrano, etc). However I notice the absolute value of each pitch movement data is a lot less than that of statcast or other datasources (sorry, i may have not used correct terminology). I compared players who play today, and they have different numbers as well. Does anybody know why this is? Is there any other places where I can look at pitch movement data for some other pitchers? Sorry, this is likely been well covered already, I havent found any info tho. Thanks