Your comparison is not valid since the KMT and CCP leadership period has different contexts, vastly different contexts. How can you compare the KMT’s period before 1949 to the CCP period post-1978? like I said, there was the internal civil war and the war against the Imperial Army so its not even fair to compare the economic growth, infant mortality, lifespan and other social indicators between the KMT period and the period post-1949, where the IJA had already surrendered.
The main question of this thread was, what would China look like if KMT was in control? i.e. what would it look like if thw KMT still controlled mainland China post-1949. And I’ll remind you my point was this: this KMT China would not go through the Cultural Revolution and it would integrate itself economically with the west much earlier than the CCP did.
If we agree that the Cultural Revolution was bad for the development of China and that integrating economically with the West was essential for development, then I conclude that the KMT would be better for mainland China on these 2 points.