Yes and no. The U.S. army had the M-I semiautomatic rifle which was superior to the bolt action models used by other armies. We also had the BAR (Browning Automatic Rifle) which was a little on the heavy side. Then the Germans came up with the sturmgewehr which was the first fully automatic assault rifle and the model the Russkies took for the AK-47. They also had the 88 mm gun which was superior to anything we had. Their fighter planes, the Messerschmidts, not so much. We had better prop planes by the end of the war.
But the Germans then came out with their ME-262 jet fighter for which we had no answer. Then there was the Tiger tank. We came out with the Pershing heavy tank by the end of the war. The panzerfaust was a superior hand-held anti-tank weapon. But we had the .50 cal machine gun.
WWII was a race by both sides to develop better weapons. The only weapon we had virtually no answer for was the the V-2 rocket. Fortunately, Hitler did not have enough Tiger tanks, V-2 rockets, jet planes, and sturmgewehrs. And by the end of the war we had the ultimate weapon the atomic bomb. Of course, the Germans were beaten by that time.
The MG42, the 88s, and the Tiger tanks were the winning weapons for Germany - but the panzerfaust was the killer. I don’t understand why we just didn’t make knockoffs, it wasn’t like Hitler would sue us for patent infringement.
I have disagreed with most everybody, so I might as well add you to the pile..
Having more Tigers, Sturmgewehrs, etc. wouldn’t have changed a thing - we had air supremacy and from Normandy on, more highly trained and reliable troops.
The Germans didn’t have a prayer from the moment they attacked the Soviets and declared war on the US.
The ME-262 was a dandy plane but it was armed for bomber interception. The four slow-firing 30mm cannons were poor armament against the more fleeting targets that fighters represent. The Brits had Glister Meteors operational and we had our first P-80s in England by May 1945. Either of those planes matched the 262 and had better fighter-to-fighter armament.
The V2s and V1s were useless terror weapons. A 1 ton payload thrown randomly at innocent bystanders. Served no purpose excepted make us angrier and less forgiving when we got done.
We won, they lost. They thoroughly deserved to lose too.