Today on Twitter, a conversation began about whether John Mozeliak was a good General Manager. Outside of John Mabry, there may not be an employee of the St. Louis Cardinals’ organization that brings more mixed feelings from fans than John Mozeliak. Some see Mozeliak as an overrated GM who has ridden the coat tails of those before him. Others see him as a genius at team building. The truth is probably somewhere in the middle.