It's an adaptation of an 80's British comic, so direct Bush administration parallels would have been difficult. The film is more anti-fascist than anything else, especially since the anarchist subtext of the comic was dropped.
The Soviets have absolutely no incentive to ever surrender to the Nazis. They knew full well that the Germans were out to kill them all.
Also, the Soviets completely wiped the floor with the Japanese every time they fought IOTL.
The Combine is theoretically supposed to be a complete meritocracy. The impression I get of Sanchez is that he liked the idea of aristocrats but thought the ones who actually ruled countries were contributing to nationalism and warfare, so he wanted a non hereditary aristocracy. Unfortunately...