Since it's WW2 it should be Germany vs. America.
*Triggered russian supporter* How dare you say that since it's WWII it should be US vs Germany. The US barely did anything other than whine about Pearl Harbor and fight in the Pacific ocean with the Japs. Main work was done by the Soviets on the Easter front withstanding the German offensive and turning the direction of the war in Stalingrad. And by the brits on the western front surviving all the bombardments and attacks on Britain. America did nothing other than apearing in Europe at the end of the war a take all the fame (even though Soviets took over Berlin first). Oh let's not forget about their "huge" lend lease to the Soviet Union (it was only 2% from the entire Soviet equipment).