My Backtesting Is Only Giving Me 57%??? How Do I get it to 97%

 
I am trying to backtest in Alpari and I only get 57% Model Quality. How do I get this up in the high 90s??? Do i need to switch brokers??? I am using the demo accounts. Will the live account backtesting be more accurate??
 

See article What the Numbers in the Expert Testing Report Mean

You need to have M1 history as more as possible.