Does out performance of a benchmark index always connote good performance?
No, it is not necessary that out performance of a benchmark index always connotes good performance. The volatility does not permit the investor to rely on one factor only. The index performance is volatile and may be driven by a few scrips only, which may not be very reflective. So it is better to keep other factors like risk adjusted returns (volatility of returns) and NAV movement in mind while deciding to invest in a fund.