The R:R always depends on the strategy. There are strategies, like trend following that have a win rate of only about 30 up to 40 percent. But the R is about 3 or even higher, because trends tend to last for a long time.Risk could be 0.01% & Risk of Ruin could be 100%.
1% Margin (Risk) may not be Rational / Optimized at all.
Sure it's better to Risk less than more but maybe it's too much !? =P
By the way ... A symmetrical R:R is fragile (Risky). Better be Skilled / Lucky !
Whereas my strategy is just based on the fact, that other traders are closing their positions or even open new positions at pivot points, because it is an indicator that shows you if the market is, compared to the last hour/day/any timeframe, uptrending (above PP) or downtrednig (below PP). So often the market reverses for a few ticks as it hits a pivot point. And this is my kind of edge in trading. In a few weeks we will see if it is an edge or not. And then you can raise to question if the strategy makes sense or not.