So I noticed that some of the targets I usually have had no problem bombing with GBU-54's now aren't being killed as consistently. I saw this line in the changelog for yesterday's patch.
Weapons. Corrected aiming data for GBU-10, KAB-1500-LG-Pr, KAB-1500LG, GBU-24, KAB-500L, GBU-54, GBU-12.
I did some testing and with the same coordinates entered for each type of bomb, the GBU-38's take out the targets no problem, but the GBU-54's seem to fall a little short only damaging the targets.
*Edit* just to be clear, I'm using the same exact coordinates that are set in the mission editor for both types of bomb.
GBU-54.trk GBU-38.trk