Remember China survived thanks to Stalin. The power of China came from him.Unlike Stalin, China took advantage of America's good will and became prosperous.
China turned to US only very late, which can be taken as a treason from China toward SU.
What for ? Nothing interesting on the moon.The Soviet Union launched the first man into outer space, but it couldn't afford to put men on the moon.
They did V1 V2 to bomb London. They still dont have sent anything into space.The Germans did launch the first batch of rockets, but not into outer space.
Truman was not friendly to Stalin. With Roosevelt they could have good relations, but with Truman it was impossible : Truman didnt want peaceful relations with Stalin, he was afraid of him.What if Stalin had died at the end of WWII? Suppose he had been partying with Beria and Molotov late at night and ended up with alcohol poisoning, for example. Both Beria and Molotov advised being friendly with the U.S., which would have translated into more prosperity for the U.S.S.R. ...
Well... You actually think China is more prosperous than Russia ? Since when exactly ? Because without SU support, you would have never got such a powerful China at the outbreak of the war. Without Stalin's support Mao would have been nothing during and after the war...Russia could have cut China off on the path to prosperity
By the time SU launched satellite and men into the space China was mostly still a medieval state.
Today China is still poorer than Russia.