Dislikedyour example assumes that stops are not adjusted. If you trail your stop, the bias changes.
Example: you got a stop 100 pips away and profit target 100 pips away. Now price moved 80 pips in your favor only to turn around and hit your stop loss.
With trade management you can avoid a loss here. So no, the chances are not 50/50 here, but increase slightly with proper trade managment.Ignored
When placing the trade there has to be some edge that tells you there is more probability that trade will go into your direction and only then the proper risk managment can be usefull.