The banking industries in both China and the western countries have the same oligopoly market structure: super, medium and small-sized banks coexist.Why have they got a different correlativity?

• 中国与欧美国家相比，银行业都呈现出大中小银行共存、寡头垄断型市场结构，但为什么市场结构与绩效却存在不同的相关性呢？