The article says that the game is 38GB, and the three DVDs it is being released on will only have 25 GB of space. I just looked it up and a HD-DVD has 15 GB of space, and last time I checked 3GB x 15GB = 45GB for single-layered disks, and grand total of 90 GB if three dual-layer HD-DVDs are used.

Either I'm missing something or these concerns don't make sense at all.

(Context for those of you like me who don't have such specs memorized, a Blu-Ray has 25-33 GB and a dual-layer has 50 GB. How a single layer can vary as much as +30% size, I know not.)