Liu Bei trusted Guan Yu, and finally Guan Yu returned to Liu Bei from Cao Cao
Liu Bei trusted Zhao Yun, and finally Zhao Yun saved Liu Bei's son.
Liu Bei trusted Zhuge Liang and became emperor.
Cao Cao didn't trust Cai Mao, and there were no generals in the 100,000 water army.
Cao Cao didn't trust Hua Tuo and finally died.