In my view, the core standard for judging a high-quality EA is always extreme, comprehensive risk management; profits are simply the natural result of risk control being in place.

The most basic bottom line is to abandon the Martingale logic of adding positions against the trend, and to eliminate at the root the risk of exponentially magnifying losses, compressing the probability of the account getting liquidated to almost nothing;
at the same time, actively avoid high-volatility big-data market sessions like the Non-Farm Payrolls and interest rate decisions, and steer clear of the sudden slippage and one-sided plunge risk brought by black swan scenarios.

Many people obsess over and dwell on the win-loss ratio, but in fact this metric isn’t the only answer.
Even if the win-loss ratio is only kept at 1:1, as long as the strategy’s long-term win rate remains stable at 65% or above, you can still steadily accumulate positive returns over the long run.
And the EA’s unique advantages over manual trading perfectly allow it to consistently realize this positive logic: the program can run tens of thousands of historical market simulations and backtests, removing execution deviations caused by human subjective, emotional decision-making, and steadily raise the overall trading win rate;
it can also monitor the market 24 hours a day, year-round, and execute strategies without interruption, so there’s no risk of missing entry or exit timing due to human fatigue, hesitation, or fear—this ever-valid trading discipline is the key advantage that manual trading can never truly match.