That sounds like a good system for trading choppy markets. With 3-4 hours max time in trade, these trades would need to be either 1 (240 bars) or 5-minute (48 bars) charts (maybe 15 (16 bars) minutes) or range charts. Mathematically the system will be break even around 50%, with profitability increasing as win rate goes up. It almost feels like its designed to play on the erratic price movements within consolidating (ranging) markets.
If your tagline and username play into this, then it is designed for quick hits in the market. I am going to guess that it is a momentum based trade because those offer high win rates as the market is basically saying "Hey I am going to do this now..." and then does it. However, you have to strike quick, like a snake (viper), to get in and capture that move, then you are out again real quick with profits and looking for the next place to strike, rather than what I am doing by analyzing higher time frames to look for bigger moves.
Over the long run, this system may get 2-3 times more trades than my system would, so could potentially make more money. Now that I think of it, it sounds a lot like the @_bob box on range charts system.