I think a lot of that is just circumstance. Just looking at their conference games:
WKU - Down 31-7 before they WKU let off and allowed them to score a couple TD's. WKU responded with 2 TD's in the 4th
ULM - No pts 2nd half. Outscored 10-0 2nd half
TXST - Had 3 pts in the 2nd half before scoring TD with 1 second to go in the game. With that TD included, they were still outscored 14-10 2nd half
Troy - This was GSU's best conference game and they jumped on Troy after half. Scored 3 TD's total 2nd half. 21-21 2nd half