As far as official positions are concerned, Sun Quan later proclaimed himself emperor. He claimed to be the great emperor of Wu Taizu, and of course he was "bigger" than Yue Fei. By the way, before Sun Quan proclaimed himself emperor, he was also a member of the marquis of Wu and the prince of Wu.

Yue Fei has the highest official position in Hubei and southwest Beijing, and is also the envoy of Tian. His title was only established in Wuchang County, and he was posthumously sealed.

On the other hand, however, official position and title are two different systems. Many people with high titles may not have real power in official positions, but the problem is that they don't know whether the emperor is an official position or a title. If it is the same title as Duke Hou Bozi, then Sun Quan's official position will be the highest, which is "smaller" than Yue Fei's ambassadors in Hubei and southwest Beijing.

So it depends on how you compare ~