I am a firm believer in letting winning trades run but not by using a silly R/R formula. Price does what it wants to and I just follow till it changes its mind.
Again, quit comparing it to poker...rw...win rate etc None of you has the stats to support calculating your risk reward. All you're doing is guessing at where price can go based on some rudimentary TA. Saying you're risking $500 but if price hits your target you make $1000 is not a 1:2 rw...it's risking $500...that's it.
It's probably why most traders are losing money. They're aiming for a high win rate with a low R:R. They cut their winners fast and let their losers go, hoping they will reverse. Those guys are making money until they get a couples of bad consecutive trades and blow out.
You can get a better R/R by using options and futures spreads, and by trading ratios of securities (using vol and correlation). Basically, with spread risk, you can take more leverage.
Basically, I agree with @Laissez Faire. That said: 1) There are many ways to make (or lose) money trading, to each its own. 2) In my view the most important metric is the "sitting" ratio Best trading to all
True, however, expectancy is only part of the equation. One must also consider the frequency of trade opportunities and execution errors, as these factors do influence the P/L quite a lot.