I think gasoline fires are easier to put out because basically every fire station everywhere has the equipment/chemicals to deal with an oil/gas fire while not everywhere has the material and training to put out a large battery fire
Yet.
At one time, fire stations didn’t have the knowhow and equipment to put out gasoline fires, but now cars are everywhere and they do. Give it time and even the most podunk volunteer fire station will have stuff to deal with vehicle battery fires.