The investment strategy and decision-making process of fund managers will affect the investment portfolio and income performance of funds. Different fund managers often face different market environment and risk factors, so they may have their own unique return performance. Moreover, the fund manager's adjustment of investment portfolio and trading operation frequency may also lead to changes in the investment style, position structure and performance of the fund. Therefore, although different fund managers pursue the same investment goal (such as maximizing returns), it is difficult to directly compare the performance of these managers because of the differences in investment strategies and styles.

For investors, it is more important to choose a fund that suits their risk preferences and investment objectives, rather than simply comparing and selecting according to the past performance of fund managers.