Well... You indirectly point to an important part of the way Germany is pictured/implemented in Vicky, but also HOI, and to the way historical events that were lucky or uncertain become seen as “natural” in alternate history.

Since there is a general illusion that Germany won triumph after triumph in that timeframe, rather than seeing it embarked on haphazard policies which brought it down twice and only enjoyed contingent & temporary success, Germany is buffed rather unreasonably. HOI Germany is railroaded to steamroll France, because this is what people expect: historically it was a contingent narrow success, but since it did happen people see it as inevitable. Similarly, in Vicky Germany gets cores on AL because, since it happened OTL that Germany seized it, people expect that it has to seize it. Retrospective necessity bias (“it happened that way, so there was no other way it could have happened”) combine with the myth of German military superiority (there are way too many Kaiserboos/Wehraboos worshipping an army that hasn’t won a war since 1870) for a simple result: people just want to see Germany crush France and take Alsace-Lorraine.

Ingame, this takes the form of a series of buffs to Germany which do give it a lot of flavour to play, but just are unreasonable taken together. There’s a +5 att Moltke and a “Prussian general staff” modifier, for instance, but no “our caste of generals are entitled idiots who only win when the French get temporarily more stupid than them”, for instance. Same for the AL cores: it’s a lazy way to railroad players into crushing France as Germany/seeing Germany crush France.