To adapt it for different publics.
For example: In The American version of Kotm they use miles and feet, while in the rest of the world they use kilometers and meters (because only Americans use that weird system)
IF THE OXYGEN DESTROYER IN KOMT KILLED GODZILLA (OR WEAKENED HIM); WHY DIDN’T IT DO THE SAME TO RODAN WHO WAS UNDER THE WATER LITERALLY WHERE THEY WERE?