Probably the best scene in the entire series.
I was on the edge of my seat, thinking " Matches Malone " would try to distract young Bruce then attack. But young Bruce opted not to shoot and put the gun down.
Taking the high road was not easy for him, but it was the best choice in the end. Things worked out. He can still find the people who hired him.
If Batman found Matches at a later date, I think he' would have severely beaten him, but stopped short of taking his life