(^^^)
Command dislocations, gross economic inefficiency and strategic incompetence are three hallmarks of a "modern" industrial / bureaucratic totalitarian regime if the RTL histories are a realistic guide to the problems an ATL needs to overcome to promote a "victory" for such generic regimes. Whichever recent totalitarian regime proposed, whichever recent historic era, the usual outcome is a short unhappy era of war followed by either quick defeat or a long period of chaos until new political and social systems become established.
The reasons are straightforward:
a. attempts to consolidate power around one leader means effective economic and political decision making becomes corrupted as "natural" (as in scientifically proven to exist) corrective feedback mechanisms are either ignored, subverted or corrupted to force unrealistic outcomes. Democracies generally do better because stupid decisions provoke corrective behavior earlier and such corrective behavior comes quicker because leaders are replaced under a system of collective responsibility.
b. attempts to retain power around one leader means competing talent, instead of being embraced, appropriated or invited into the system, becomes excluded, executed, gulaged, or is isolated into meaningless competing fiefdoms frittering away economic effort and political potential. In a certain case example, over 200 million people were organized into a ramshackle continental empire that deployed a bewildering array of weapons on land and in the air (20 different kinds of battle rifles for example with 4 different lines of conflicting and confusingly similar ammunition) that logistically hobbled their ability to prevent a coalition of medium sized seapowers from invading that continental empire and participating in subduing the would be empire in a surprisingly short four years. Granted another inefficient incompetent continental one man rule terrorist regime was an ally to the seapowers, but the point is that even that madman ruled empire for a short period of time relaxed the "rules" of power concentration long enough to win a war against its mirror image competitor and yet in the end reverted to the same characteristics of a totalitarian bureaucratic state that doomed it, too, to the waste-bin of history.
But that is just my opinion. YMMV and it should because whatever I "think" (^^^) is certainly not gospel in the face of a better argument (and there must be one, somewhere.).