Not attempting patriotism here, I am wondering sincerely if all my education may have been too biased. I just recently finished watching Band if Brothers and The Pacific so i may have some seriously skewed images perhaps?
That is completely incorrect. The USA was certainly one of the major players in the war, but by no means did we even contribute the majority of the effort in winning the war. That task would fall to the Soviet Union, which lost over 20,000,000 people to Nazi Germany and fought the entire might of the German army for 3 years almost single-handedly. Compared to that, the total US casualties of 600,000 seems meagre. Britain also had a major role, but looking simply at who bore the largest part of the cost, it is undoubtedly the Soviet Union.
If you would like further elaboration as to just how massive the cost of the war was to the USSR, I'd be glad to explain.
You could argue that America won the War in the Pacific singlehandedly, but you'd have to ignore the contributions of the Australians, British and Chinese to do so.
Still, if there was one place that the argument (however weak) could be made, it would be there. Certainly not Europe, where the Brits held the line in the west, and the Soviets shoved the Germans back in the east, before the US had boots on the ground in Normandy.