It has been a widely established fact among military historians of WWII that the end of the war came as a victory of military quantity against military quality.*(refering to the German Army)The Germans had the oldest and best trained General Staff in history going back hundreds of years**.The theory of armored warfare was advocated by Liddel-Heart ,De Gaule and general Fuller against the conservativism
of The British and French armies,but the man to give breath and life to it was General Heintz Guderian,a man who influenced the course of the war,a general of armored warfare
with better dash and elan than Rommel or Patton more foresight and intuisiveness than any other of the senior commanders of WW2 and he is ranking now among the great captains of history***and yet this man points out Field Marshal Erich von Manstein as the finest operational brain in the German Army(the plan 'Fall Gelb'-yellow case,attack against France and its allies in the Western front,was executed based on Manstein's plan- France fell in few days and if Guderian was not stopped at river Aa four 48 hours
for a silly reason,Guderian would have arrived in Dunkirk before the allies and the war would have finished there and then(if England didn't sue for peace,there was no army to stop a German invasion...)since the entire Engish Expeditionary force would have been captured.the allies(French had more and some better tanks than the Germans then-B1/bis,whose plans were forwarded to USA by Vichy regime and the Americans constructed the Sherman tank-but the doctrine was superior and tanks,mobile guns and armored infantry moved moved an mass wheras allied tanks were attached to infantry units.)The Germans acted with Blitzkrieg(tank-plane(bomber)/cooperation of all arms in a model manner in the first two yars of the war.
Their equipment was first class apart from the appearance of
the best tank in the war,the T-34 which buffled the Germans,until the appearance of the Panther Jagpanther and
Tiger models in early 1943,with their superior 88mm gun and best design and armour in the war(Jagpanther being better than any NATO tanks for the first 18 years of its existence****)
the 88mm anti-aircraft heavy gun was the most successful gun in the war used with devastating effect against allied tanks throughout the war.
The Stuka impoved antitank model ( with 40mm antitank guns was ultimate model in the East;colonel Hans Rudel celebrated the destruction of the 400th tank by these aerplanes,in January 1945, but the Russians had thousands..
When Stalingrad was surrounded and von Manstein took over army group south the tank Mark IV was equiped with 76/71 gun,general Hoth and his panzergroup arrived 25 miles from the ring of Stalingrad always fighting against superior forces with superb coordination of arms,but Paulus refused to exit and sacrifised his 300000 strong army in"fortress Stalingrad" as Hitler proclaimed it;had he come out in coordination with Hoth the southern armies would have achieved parity with the Russians and the monstrous battles of 1943 such that the western front never witnessed,would have been fought from a different perspective(general Hoshbach and his 56th tank corps had destroyed 917 Russian tanks in 3 days!)
In 1943/1944 the allies new they couldn't race for superior weapons(new models would slow production)and instead produced masses outnumbering the Germans at least 5:1
who had to supply a two front war...the best antitank weapon of the Americans proved to be their air-force,which stopped dead von Kluge's attacking armour at Falaise...in Normandy Lieutenant Whittman with 4 Tigers destroyed 22 fighting vehicles of the Canadian division advancing at Caen,many of them Cromwells,the best tanks allies had then(an example of
German training) but by then German losses in both fronts had
eliminated the core of veterans although the spirit and morale
of the Germans remained undaunted and five months before the end of the war germans unleashed the counter-attack at
Ardennes that caught the allies by surprise;but not the same
German army short of men,gasoline and air-support although
their tank units were first class.The Americans didn't meet the germans in their peak(1941/1942) and we cannot make
comparisons in 1944 when the end of the war was in sight and the Russian army bearing the brunt of the fighting in the war for three years alone in Europe,the main theatre of war,and occupying up to 4 million Germans,although the Germans gave the Americans a very bad nightmare by defeating them in Africa at Kasserin pass(the only time Americans met Rommel in a running battle...) and by their heroic and defensive victory in Monte Kassino in defence of Rome...