No, your ability to exit the trade, or not, is the only possible edge on any entry. The past does not equal the future.
The first edge is already to find an entry that has a high probability to be very good.
The second edge is to find an exit that has a high probability to be very good.
The third edge is to know where to put your stop.
Each action you take is a potential edge that influences the final result.
You can calculate statistically with high probability on 1000 trades the outcome of your trades. I can tell with high probability where I will be statistically after another 100 trades. In fact I know for 100% sure that the final result of thenext 100 trades will be profitable. So foresight, not hindsight.
I never had a series of 100 trades that ended with losing money on the total result of the serie in over 10 years.
Past can tell you with high probability within a certain range where you will end. Definitelly better than 50/50. 50/50 can apply for 1 trade, but traders don't trade 1 trade, they trade hundreds or even thousands of trades, and that changes everything.