Re: >Germans tanks were 5 times better
"Musta sucked big time gang-rushing Tigers, using flammable petrol/gasoline-burning M4s mounting short 75s..."
The Germans called the Sherman the Tommy Cooker, and the British crews of the sherman called it the Ronson, an advert for a popular lighter which was advertised with the catchphrase "lights first time, every time". Rushing a Tiger was only really a problem if you were American though as a British troop of 4 shermans had a Sherman Firefly attached, armed with a 17 pound gun that could punch holes through the front of a King Tiger at a mile. US forces were offered the Firefly and turned it down since such a heavy gun was "not invented here" and also "unnecessary". Oops.
re. the tank production figures. Germany did not, strangely enough, really fully go to a war economy until fairly late in the game, 43?
Germany really had no reason to go all out until around 1943. Look at it from their point of view. They had beaten and conquered everybody other than Britain by 1941, and by the start of 1942 were they were sitting outside Moscow stopped as much by the weather as by the Russians. By modern Russian figures up to 40% of the tanks facing the Germans at Moscow were British, supplied via the artic convoys. The Germans are choking off those convoys with surface ships and the Luftwaffe.
If your in charge of Germany, are you panicking about your tank production at this point? That Russia is outproducing America(!) in tanks despite the loss of large areas of industry that you've captured doesn't become obvious midway through the year, at which point you simply place bigger orders for your own tanks. That there is need for desperate and drastic measures doesn't become obvious until later on.
Ok. Problem admitted, let's ramp up production. You've also got a problem mein Furher. Britain is hellbent on blockading you and is merrily sinking your freighters from Norway and Sweeden left right and centre. Russia was supplying a lot of your iron that was getting through to you, but you've now attacked them and they are using that Iron to build tanks with and aren't interested in selling it to you. The British are also putting massive diplomatic pressure on overland sources of supply to Nazi Germany such as Turkey with dire threats about "AFTER THE WAR!". Where does the additional material come from?
Add to this the bombing offenses steaily bombing infrastructure flat into 1943 and the position becomes hopeless. Oh yes, and your critically low on fuel as the best sources are in the Middle East, and Britain is has more troops facing Rommel than it has in the UK and appears quite determined to keep Rommel away from the oil. Italy is complaining that they haven't even got enough fuel for their Battleships to go and sink the convoys carrying fuel from Egypt past their coast. The Luftwaffe are complaining that they are running out of fuel for their fighters, and the 25% of your petrol stocks are being generated by turning coal into fuel by the Fischer–Tropsch process.
When the American's add an extra 50% (by bomb weight dropped) to the RAF's efforts to systematically bomb german oil flat then the result is dire. Luftwaffe Field Marshal Erhard Milch, referring to the consequences of the Oil Campaign, claimed that "The British left us with deep and bleeding wounds, but the Americans stabbed us in the heart." and Albert Speer, writing in his memoir, said that "It meant the end of German armaments production."