the glorious sun jian wrote:Yes he feard Gan Ning .....
and Gan ning is much better general than Guan .....even Sun Quan is a better as general than Guan .
There is an argument for saying Gan Ning was a better general than Guan Yu, though i certainly wouldn't agree with it. Guan Yu's might was feared and respected by the other kingdoms, there is no proof that Gan Ning's was. Liu Bei left Guan Yu with a very small force when he invaded Yi and hence for Guan Yu to build his forces to a degree that both Sun Quan and Cao Cao were threatened was very impressive.
To say that Sun Quan's skills as a general were better than Guan Yu's is completely unrealistic. Historically, Sun Quan personally had very few victories to his name, he commited numerous invasions and most of them were failures. Most of Wu's military achievements were because of Sun Quan's great generals like Lu Meng. Sun Quan's skill was in recruiting talent and politics, he was not a good military commander. This is not just my opinion, i read it in the 'Generals of the South', this is the work compiled by Rafe de Crespigny.