Why is Cao Cao's comprehensive ability better than Lius Pongoh's, but he can't dominate the whole country?

Cao Cao's failure to ascend the throne has nothing to do with whether he is stronger than Liu Bang. Even if Cao Cao's comprehensive ability is stronger than Liu Bang's, it is doubtful. Cao Cao is very powerful, but Liu Bang is very difficult to deal with. Liu Bang, the first self-made civilian emperor in the history of China, was able to defeat Xiang Yu, the overlord of the Western Chu Dynasty, win the rule of Chu and Han Dynasties, and establish the Han Dynasty, not by luck. It was not until the Three Kingdoms period that Liu Bei knew that his ancestor Liu Bang had been able to form a comprehensive camp with Cao Cao. Therefore, it is doubtful whether Cao Cao is stronger than Liu Bangqiang. There is no such example. Why doesn't Cao Cao rule the world? There is a simple reason. First of all, Cao Cao's era and situation are completely different from Liu Bang's. During the reign of Liu Bang, the Qin Dynasty perished, and various princes began to compete for power and interests. Without any restrictions, Liu Bang grew rapidly without any obstacles. The Cao Cao period was different, although the Han Dynasty at the end of the Eastern Han Dynasty was only nominal. But after all, the Han Dynasty still existed. All governors, including Cao Cao, can't do whatever they want. Many times they will be subject to many restrictions. After all, the Han dynasty has not officially perished, and anyone who dares to cross the line will commit suicide. Yuan Shu is a good example, so there were many restrictions on the origin of Cao Cao at that time. Tell me more about Liu Bang and Cao Cao. After the demise of the Qin Dynasty, Liu Bang became the second largest vassal in the world after Xiang Yu. Because Xiang Yu usurped all the thrones, treated them unfairly and killed the upright emperor Xiong Xin. All the princes in the world rejected Xiang Yu, even a little, and then soon. So the Chu-Han War broke out, and Liu Bang called the governors to unite to attack Xiang Yu. More versus less is Liu Bang's strategy. On the other hand, Cao Cao at the end of the Eastern Han Dynasty, all the princes were enemies of each other and had no face at all. Neither can brothers like Yuan Shao and Yuan Shu. Therefore, it is much more difficult for Cao Cao to defeat the princes one by one than for Liu Bang to rule the world.

The last point is my personal guess. I think Cao Cao has the ability to rule the world. Cao Cao deliberately delayed the reunification. As we all know, Battle of Red Cliffs was an important battle, which led to two rounds of fighting. But if he comes back after the defeat in Chibi, Liu Bei and Sun Quan may not be able to stop him. But on the one hand, Cao Cao didn't dare to take risks, and he couldn't lose again. On the other hand, Cao Cao knew that even within Cao Wei, the pro-China forces still held great power. Cao Cao was worried that his last move would be used by Emperor Xian of Han Dynasty. After all, Cao Cao did not completely eliminate all the pro-China forces in the Cao Wei camp, so it is understandable that Cao Cao is unwilling to take risks. Finally, Cao Cao didn't want to be accused of usurping the throne. You know, in history, Cao Cao obviously had the ability to succeed to the throne, but he didn't succeed because Cao Cao didn't want to be branded as a usurper. From this perspective, we can also understand why Cao Cao is unwilling to fight to rule the world. In the final analysis, Cao Cao must be the emperor who unified the world. Of course, this does not conform to the notorious problem that Cao Cao did not want to endure, so Cao Cao did not want to unify the world. He has been committed to laying the foundation for Cao Pi's independence, whether it is immigration or economic development.