C1307
With his strength, even if he was unable to win against one Yanliang, he would not be inferior to him. But now that Yanliang had teamed up with him, he had to split his focus to protect Liu Bian. He had no way of fighting against Yanliang.
Moreover, other than Yanliang and Wenchou, there was also Yuan Shao who had reached the Small Perfection of Internal Qi Realm