Wrong File size for Godzilla Save the Earth (Xbox)

The page for the Xbox version of Godzilla: Save the Earth says the Xbox.iso file for the game is 6.44 GB, when in actuality its only around 565 MB. The 6.44 GB size is closer to the regular ISO file size, (Around 6.2 GB), but the ISO file size is also incorrect, saying 12.13 GB.