Really, we only played Europe and Pacific alone until we got used to the new ruleset. The pacific game seems sorta broken by itself, which is why they added the 30+ IPCs for the us entering war bonus. When you play Europe alone, it’d be weird because Germany is facing off 2 vs 3 whereas Germany is usually not getting a ton of attention during the early game in Global (except during a KGF or later in the game) where as in Europe alone, its the only target really…In Global one of the huge differences is that Japan’s DOW allows the USA to enter the war early…in Europe alone its just a wait like WW1
Global is the Cadillac edition of the AxA ruleset, it adds a ton of fun dynamics. Really, once you go Global, you never go back. The time to play is huge (8 hours to a concession, 12 to a true victory is brief), but the flexibility and scope are what people waited years for.
It may seem like “two different universes” but both UK and US have to have an all new mentality during the Global game because there is a very strong push-pull dynamic, there are a ton of potential moving parts as both sides. By focusing your game as the Allies on one of the two major axis powers, you can force them to make complex, long term decisions and vice versa. Since you have 5-6 teams to work with as the allies, you can make decisions that coordinate them across the whole world