Togo said:
Most US equipment was superior to what it faced, and when it wasn't superior,
Unless you have a source for this, I'm inclined to put it down to US propaganda. There was some ropey equipment pressed into service in various theatres, but the US aircraft carriers, tanks, and fighter craft were not obviously higher quality, and in many cases were of notably poorer quality than what they were facing. What they certainly were was more numerous.
it made up for the difference in numbers. There is a famous quote from a German tank commander, who said, "A Panzer was the match of ten Shermans. Unfortunately, there were always eleven Shermans."
Case in point. The Shermans were the IKEA of the tank world, tanks that could be shipped in peices for easy assembly by relatively unskilled people. As such, they were shipped in vast numbers. But they were light tanks. They were easily out armoured and outgunned by the later Panzers, and by the far heavier British tanks of the same period.
I don't think anyone would dispute the superiority of the P51 Mustang fighter or the F6F Hellcat. These planes were developed during the war, while Germany and Japan slogged on with planes designed in the 1930's.
Here's an entire page of fighter enthusiasts disputing discussing their favourite planes.
http://stephenesherman.com/discussions/best_fighter.html
Most of them dispute the superiority of the P51 Mustang fighter or the F6F Hellcat. The Me 262 (pictured in the previous post) is a fairly obvious counter-example, but there are plenty of others.
Most of the planes, on both sides, were designed in the 1930s. People in the UK love to talk about Spitfires, but most of the Battle of Britain fighting was done in Hurricanes.
As you say, though, a win is still a win. One of my favourite clues as to where that win came from comes from an economic analysis of the Battle for the Pacific, where it was pointed out that the Japanese had 10 or so aircraft carriers at the start of the war, and built 8 or so more. While the US had similar numbers at the start but built 245.
That's not superior equipment. That's just more of it.