If both strategies have the same expectancy, the same number of trades, and you're using a % of equity for your risk sizing method, then the higher win % is superior. It will have a lower DD, higher return and a better risk:reward ratio.
Here's two identical strategies:
Method A
% win = 40%
win size = 3.375
% loss = 60%
loss size = -1
expectancy = (.4 * 3.375) - (.6 * -1)
= .75
Method B
% win = 70%
win size = 1.5
% loss = 30%
loss size = -1
expectancy = (.7 * 1.5) - (.3* -1)
= .75
I setup 100 trades of each method in their win/loss proportions. Then I ran a Monte Carlo test with 1000 randomized passes across the data. Starting equity was $100,000, risk was 1% per-trade, and the multiplier for the pts. was $50.
Method A
Max. DD ($14,850) (1 in 1,000 passes)
DD at 95% level ($6,381)
DD at 50% level ($1,000)
Lowest ending profit +$104,843 (1 in 1,000 passes)
lowest 5% of profit +105,581
50% level of profit +106,431
Reward (at 50% level) to Risk (DD at 95% level) = 106431/6381 or 16.68
Method B
Max. DD ($4,950)
DD at 95% level ($2,000)
DD at 50% level ($0)
Lowest ending profit +$108,950
lowest 5% of profit +109,300
50% level of profit +109,750
Reward:Risk = 109750 / 2000 or 54.88
The lower DD's are caused by the higher win %. The higher profits are caused by more of the compounding opportunities taking place while making new highs instead of digging out from the DD.