Optimization vs Backtesting

I am using the latest version 4.3.9.7083

There is a huge issue and discrepancy between Optimization and Backtesting. To be honest, Optimization is basically useless as the parameters and results are completely different than a Backtesting run. I will give a few examples:

Optimization gives me this result 

Net Profit should be 1322.35

Max Equity Drawdown %: 33.91%

Running the Backtracking with the same parameters that the optimization produced and same period:

Net Profit: 2069.33

Drawdown %: 86.32%

But this is only an example. Basically I could choose any of the outputs from the optimization and Backtesting would not be the same.