Bananji > Earl Shi in terms of STR, but in a duel, I think Earl Shi would win. Because Earl Shi's speed and reactions are much faster than Bannaji, and the weapon Earl Shi uses is a spear. When used effectively, it can overcome weapons such as maces, swords and even Guandao.
Ouhon once caused Kou Yoku and later bananji many difficulties. Bannaji also had to use tricks to pull Ouhon down from his horse. If bannaji's opponent is Earl Shi (in a mentally healthy state), the fight can be ended in a single blow.
It's similar to the fight between young Kanmei and Oukotsu. Many people think that Kanmei is stronger than Oukotsu, it is not entirely accurate. The truth is that Kanmei used a sword and attacked at a faster speed, allowing him to take down Oukotsu in a single blow. If Kanmei uses a mace, the match will last longer, and Kanmei may lose (if we consider Oukotsu's experience, weight at that time > young Kanmei).