Portfolio Performance Attribution Analysis

Consider a fund manager who is assessing the performance of a diversified equity portfolio over the last quarter. The total return of the portfolio for the period was 8%, while the benchmark index returned 6%. Upon deeper analysis using attribution techniques, the manager discovers that 4% of the portfolio's return was due to stock selection, and 2% was attributed to asset allocation decisions. Given this information, which of the following statements is true regarding the performance of the fund manager?