Every 2 out of 3 mid and smallcap mutual funds fail to beat benchmarks. Should you still invest?

Mid cap mutual funds offered an average return of 26.09% in the last three years. The mid cap funds are benchmarked against Nifty Midcap 150 - TRI and BSE 150 MidCap - TRI which gave 28.62% and 28.24% respectively in the same time period.