Yes, lets see a full version of the map.
Regarding IPC values, you have to make adjustments for resources, like Romania’s vital (for the Axis) oil supply making it far more valuable than say Denmark, even though Denmark has a higher GDP.
Also the lack of industrialisation in places like China; it’s hardly realistic to allow the Chinese to build battleships even if they reconquer all of China from Japan and have a whopping great IPC income. In fact, as this was a war between industrialised powers, I really don’t see the case for China being a “power” in it’s own right. I prefer two Chinese factions controlled by the USA and USSR respectively.
US income has to be throttled, otherwise the Allies siimply can’t lose.
Soviet military strength was way higher than GDP percentage as it had a highly developed war industry, huge human resourses and payed it’s people peanuts; hence it was much cheaper for the Soviets to build a T-34 than for the Americans to build a technically inferior Sherman. I find it much simpler to reflect this in territorial income values rather than the messy “different unit costs for different powers” approach.