Yeah these "what-if" scenarios are hard to picture; any speculation is at best, well, just speculation
With the China situation, I'm not certain that my speculation of a Nationalist victory would occur even if the Nationalists turned on the Communists a day after the war. However, it is obvious that the years the Nationalists waited on George Marshall's advice (thanks a lot, George... we lost our country because of you) was time terribly lost, allowing the Communists to build up in the northeast. Had the Nationalists advanced earlier, the two China situation may still be today, but the borders might be drawn differently. Perhaps a north-south split somewhere in north or central China proper as opposed to the line being drawn along the Taiwan Strait today.
But again, all speculation. And totally thread-jacking :P