A lot of folks look at the so-called superiority of German engineering, but they are looking at it wrong.
The Tiger tank is an excellent example of this. By almost every measurable way, the Tiger was superior to all of the other tanks in WWII. If you put a Tiger and a U.S. Sherman tank face to face, you could even let the Sherman fire first if you wanted to. The Sherman couldn’t penetrate the front armor of the Tiger. The Tiger, however, could put a shell in through the front and out through the back of the Sherman. The Russian T-34 fared a bit better than the Sherman against a Tiger, but it was still far from an even match. So this is clearly an example of the superiority of German engineering, right?
Wrong.
Yes, the Tiger was a wonder of German engineering, but it was extremely expensive and was difficult to produce. Yes, it took on average 4 Shermans to kill 1 Tiger, but we could produce 10 Shermans for every 1 Tiger that they made. The Russians also rather famously discovered that their much simpler and much more rugged T-34 could often defeat a Tiger simply by ramming it. There are a lot of exaggerated stories of the Russians ramming tanks in WWII and many of them are just stories, but they are based on some real incidents where the outgunned Russian tanks did in fact ram the German tigers to disable them. The “superior” Tiger with all of its complex parts was also a royal pain to repair when something broke.
If you look at producability and simplicity with the intent of rugged reliability, the Russian T-34 was probably the best tank of WWII. But if you put a single Russian T-34 up against a German Tiger, the Tiger is probably going to win. The T-34 didn’t win in one-on-one battles. It won by coming over the border in wave after wave after wave of tanks. In the end, on both fronts, the Tiger couldn’t be produce in large enough quantities to make a significant difference on the battlefield.
Also, the Germans did have smart bombs, and most folks haven’t heard of the U.S. using smart bombs until the Iraq war. But while Germany had the Fritz X for example, the U.S. had the Azon. Both the U.S. and German smart bombs were produced in fairly low numbers and both were nowhere near as accurate as modern smart bombs. Germany was pretty much on even ground here, not light years ahead.
The Germans had the only practical jet fighter of the war, but they weren’t light years ahead of everyone else. The Messerschmitt Me 262 gets a lot of well deserved credit for being the first operational jet fighter, but the thing sucked so much fuel and had such a limited range that while it did shock the bejeezus out of the allied pilots that first encountered it, it wasn’t of much practical use. Also, the U.S. and England both had jet engines. They just hadn’t quite turned them into practical planes. If the war had lasted a bit longer, the U.S. Lockheed Shooting Star would have been put into service. Japan had the Nakajima Kikka, which was still in the prototype stages when the war ended. They also had the Yokosuka MXY-7, though to be fair it was more of a kamikaze rocket than an actual jet fighter.
Germany was putting a lot of effort into the Me 262 at a time when it was running very low on regular planes and pilots. They needed more planes to go toe to toe with Allied fighters and bombers, not something that could race up, fight very impressively for a very short time, then run away as its fuel ran out. Like the Tiger Tank, the Me 262 took a lot of resources to build and operate, and like the Tiger it couldn’t be fielded in large enough numbers to make a difference.
The “best” weapons don’t necessarily win the war. There is something to the old Russian saying (often attributed to Stalin) that “quantity has a quality all its own”. You see this over and over with German weapons in WWII, and not just in tanks and jet planes. The German MG-34 machine gun for example was a great gun, probably the most advanced machine gun in the world when it went into production, but again it cost too much to produce. The Germans made very fancy and well engineered weapons, but they focused too much on making each weapon as good as they could, and not enough on producability and cost. In the end, their so-called “superior engineering” probably did them more harm than good.