In 2019 the only way to compare is the one common opponent between them. App started off slow in their first game with the new coaches but beat ETSU 42-7 and by the 2nd quarter it really was not a game. Citadel beat ETSU 31-27 and had to put the game away in the 4th quarter.
The big difference for App and GSU now is both teams have a couple more potential NFL players and much better depth. In FCS a team is super lucky to have 3 very good RBs but both of them have 4-5 RBs who can run for 100 yards in a game easy. App actually beat South Carolina because of depth. Both teams had major injuries but App's 2nd and 3rd string came up big and helped put them over the top in Columbia.
App's depth is what should give them the edge with Citadel but the option is the one thing that has given App troubles at times. 2022 is a ways away though so it is hard to know how either team will look. Anything could happen and we have two years so we will see how it looks.