You can do a hypothesis test to see the probability of obtaining the same results due to luck. This would tell you a lot about the edge and the robustness the strategy might have. from personal experience, which is not much, i can tell you that equity curve does look too good to be true, but i can be wrong. However, the hypothesis test will be able to tell you much more than anyone on ET. good luck!
after it experenced nearly 400 points drawdown it begin to bouce up now the draw down is about 200 points sometimes I find it is hard to stick to my trading system
Do not trade a system with real money ( or at least with big money) until you are comfortable with the fluctuation of its equity curve . A thouroughly tested strategy may boost your confidence .