I have been giving this some thought, probably in some respects too much thought. I think economies and production in general are broken across the board, this leads to host of problems/issues in the game which break away from the developers stated intent.
Their own intent, to have an authentic real-time war simulation is compromised by this, at least if that intent is to have a game that simulates World War 2. I realize this could be construed as a stinging criticism, it is not intended to be. This game has incredible potential, and in my opinion with some tweaks in the right direction could be a truly epic game.
If we use historical figures as a baseline, for lack of a better term, the following production values are from "The Air War 1939 -1945" by Richard J. Overy
| 1932 | 1933 | 1934 | 1935 | 1936 | 1937 | 1938 | 1939 |
| France | - | - | - | 785 | 890 | 743 | 1,382 | 3,163 |
| Germany | 36 | 368 | 1968 | 3183 | 5112 | 5606 | 5235 | 8295 |
| Italy | - | 386 | 328 | 895 | 1,768 | 1,749 | 1,610 | 1,750 |
| Japan | 691 | 766 | 688 | 952 | 1,181 | 1,511 | 3,201 | 4,467 |
| United Kingdom | 445 | 633 | 740 | 1,140 | 1,877 | 2,153 | 2,827 | 7,940 |
| United States | 593 | 466 | 437 | 459 | 1,141 | 949 | 1,800 | 2,195 |
| USSR | 2,595 | 2,595 | 2,595 | 3,578 | 3,578 | 3,578 | 7,500 | 10,382 |
These are total aircraft numbers which include transports, trainers, and other miscellaneous aircraft. Something interesting to mull, French doctrine at the time allocated 37% of aircraft production to reconnaissance aircraft according to the author.
From Wages of Destruction by Adam Tooze (equipment strength/deployed)
| | | | |
|---|
| October 1939 | May 1940 | June 1941 | January 1942 |
| PzKampfW I | 1.3505 | 1,266 | 966 | 817 |
| PzKampfW II | 991 | 1,110 | 1,159 | 996 |
| PzKampfW III | 151 | 785 | 1,440 | 1,866 |
| PzKampfW IV | 143 | 290 | 572 | 511 |
| PzKampfW 38 t | 122 | 238 | 754 | 434 |
| Total Light | 2,296 | 2,376 | 2,125 | 2,811 |
| Total Medium | 416 | 1,313 | 2,766 | 2,811 |
| Half-tracks | 5,200 | 7,997 | 15,642 | 19,129 |
From Wages of Destruction by Adam Tooze
| October 1939 | May 1940 | June 1941 | January 1942 |
| 2 cm Flak 30 | 895 | 1,487 | 2,153 | 2,690 |
| 3.7 cm Pak | 10,560 | 14,257 | 15,522 | 13,348 |
| Light Mortar | 5,062 | 9,957 | 16,129 | 15,579 |
| Heavy Mortar | 3,959 | 7,091 | 11,767 | 11,719 |
| 10 cm Nebelwerfer | 179 | 288 | 1,112 | 953 |
| Light Infantry Gun 18 | 2,931 | 3,365 | 4,176 | 4,022 |
| Heavy Infantry Gun 33 | 367 | 491 | 867 | 866 |
| L. Howitzer 16 u. 18 | 4,919 | 5,538 | 7,076 | 6,772 |
| H. Howitzer | 2,434 | 2,383 | 2,867 | 2,746 |
| Heavy Artillery 21-42 cm | 47 | 163 | 442 | 548 |
From Wages of Destruction by Adam Tooze
| October 1939 | May 1940 | June 1941 | January 1942 |
| Rifles K 98 | 2,569,300 | 3,228,500 | 4,372,800 | 4,717,500 |
| MP 38 and 40 | 5,711 | 27,800 | 166,700 | 205,450 |
| MGs | 103,300 | 150,400 | 203,250 | 206,500 |
In game production doesn't reflect any of this, understand one could argue a variety of reasons why. I think the primary issue is a flaw in economic constraints, which allows corresponding exponential growth in CIVs and MILs. Consequently we see Barbarossa with 15,000 medium tanks, which is almost the entirety of what was produced in the war by Germany, with corresponding outcomes. I personally think equipment casualties are not high enough, so pools continue to grow at absurd levels. But currently despite the claim about historically accurate aircraft and tanks equipment is very similar among the combatants, when it really shouldn't be. Further with game mechanics a British fighter I, by virtue of being able to research with a design team, will always have an inherent advantage, so although the Hawker Hurricane and ME-109 were close adversaries, game mechanics make it so that one will always have an advantage.
In the process of posting this, realized aircraft numbers weren't really supporting my argument, I suspect, but cannot from my books find the percentage of true front line aircraft in the numbers. From the same "The Air War 1939 - 1945" before the Invasion of the Low Countries front line aircraft strength given as follows:
10 May 1940 RAF 416 aircraft in France, French air-force on the eastern border 1,200 aircraft. Luftwaffe 2,750 aircraft. In the author's words, the British were reluctant to commit their main forces to the land battle and the French had too few modern aircraft to carry out an effective defense. In game, I rarely have any type of numerical, or technical superiority when the war in the West starts. Of course in game, my medium tank production is massive in comparison to any any sort of historical numbers, and in my opinion this is due to a lack of constraints, with exception of resources availability within the current economic engine. So many of the discussions about width, unit spam, and whole host of other problems are due to the current economic model.
I'm not even going to address ship building, which with Man the Guns, should be one of the more interesting aspects of the game, but with the AI not building capital ships, and in many respects an inability to mimic historic production has its own issues.
TLDR
Lack constraints on the economy mainly CIVs results in exponential growth, with corresponding unrealistic results such as 15,000 medium tanks for Barbarossa. Combat across the board for land and air doesn't produce high enough equipment losses, which continues the pool snow ball. Not having a constraint on table of organization and equipment, such as not producing any 3.7cm Pak or 2cm Flak frees otherwise constrained resources (MIL) for more tanks.