If KMD had ruled China instead of CPC since 1949:
1. China would have never turned into a Marxist/ Communist.
2. The US would have never allied with Japan soon after WW2 - the very reason Japan recovered quickly as a loser of WW2 was because China turned red, hence the US felt the urgent need to ally with Japan to encircle red-China and red-Russia.
3. There would had been no Korean War : 100,000s of lives of both sides saved
4. The would had been no Communist VietNam, and would have had no VietNam War with the US, neither China-Vietnam war - millions of lives saved as a result.
5. China would have stationed troops in Japan as the US ally right after the war as a winner of WW2. Okinawa would have been another independent country friendly towards China sitting in the UN, like most of its history instead of being a part of Japan.
6. Japan's WW2 top criminals would have been executed. No one today would have heard the name called Shinzo Abe
7, there wouldn't have been Cultural Revolution and Great Leap forward...millions of Chinese lives ( many of whom were Chinese intellectual elites at a time) saved.
8. China would have been industrualised, and have freedom of speech and press, etc, almost the same way as Taiwan did, but on a much bigger scale at a much advanced level.
9. China would have become an economical and military statue -quo power of the US long ago, both as a friend and as a technological competitor to the US in the Parcific and around the multi-polar-world. As a result, with combined effort of both countries human beings would have probabaly colonised Mars years ago.
10. There have been no issue of Diao Yu Islands.
11. China's map today would have included: outter Mongolia, South Tibet, and a HUGE portion of today's Russian Far East - the ancestral homeland of the Manchus and teh Mongols.
12. The ole Soviet would have collapsed long ago, other than 1989, due to the combi efforts of China and the US - the allied powers.
13. Japan today would have become a little brother - a kind of "tributory state" - of China, like most of its time in the history.
14, both ChineseTiger and Speeder 2 would have been living in China instead.
15. India would have toilets long ago due to China's donations, rather than depending on Melinda & Bill Gates Foundation and Modi ji's world-touring begging bowl
...
I can go on.