1, fund performance commission is 20%: this means that the fund manager or fund company will calculate the performance commission according to the overall performance of the fund, and the commission ratio is 20%. Usually, the commission is based on the total rate of return of the fund or its performance against the benchmark. For example, if the total return of the fund is 10%, then the performance commission is 20% of 10%, which is 2%.

2. Overperformance by 20%: Overperformance refers to the excess of the performance of the fund relative to the selected benchmark index or the performance of similar funds. The excess performance commission is calculated according to the excess performance of the fund, and the commission ratio is 20%. Specifically, if the fund's excess return is 5%, then the excess performance commission is 20% of 5%, that is, 1%.

3. Generally speaking, 20% of the fund performance commission is calculated according to the overall performance of the fund, and 20% of the excess performance is calculated according to the excess performance of the fund. The fund performance commission is based on the total return, and the excess performance commission is based on the performance of exceeding the benchmark or similar funds. So there is a difference between the two in calculation and logic.