If the population of the powerful nations in the Allies and the Central Powers are calculated separately, the total population of the Allies would be 65.41 million + 52 million + 35 million, equaling 152.41 million people.
The total population of the Central Powers would be 165 million + 44.1 million + 39.7 million, equaling 248.8 million people.
152.41 million compared to 248.8 million, there is a population gap of nearly 100 million between the Allies and the Central Powers.
Although most of this 100 million people are Russians, don't forget that Britain and France also have extensive colonies.
If the population of India and African colonies are included, the population of the Allies would increase by several hundred million and would be far ahead of the population of the Central Powers.
From the huge population gap, it can be understood that there is still a gap in the combat power between the Allies and the Central Powers at present.