No, they won, but they had to go through due process to do so. However, the issue is a very real one. We have those that say that they are indeed their brother's keeper, "brother" being a term to mean of their fellow humans, not just family. This is a balancing act for many of us. How do you protect your own family whilst you are in jail for defending someone else?
What are often perceived as clear cases of self defense turn out to be gray areas or something LEOs aren't prepared to handle and then leave it up to the DAs. The classic case from Texas is the first CHL shooting with Gordon Hale who was chased down in a road rage incident, beaten about the head where upon he suffered multiple broken bones in the face and was permanently (partially) blinded in one eye when the attacker broke off the attack. The attacker, who outweighed Hale by something like 70 or 80 lbs, decided he wasn't done and returned to vent more rage. Hale shot him once. Sure enough, nobody wanted to give Hale a pass on the shooting as it was the first CHL shooting DESPITE Hale's shooting meeting all the necessary requirements for it to be justified. He was the victim. He suffered grave bodily injury. He feared for his life. He didn't resort to his gun first. He did not shoot maliciously or after the fact. As he was trapped in traffic and trapped inside of his vehicle (he was beaten through the open window), he could not retreat, but he got charged anyway. Probably the biggest problem with the whole incident was that his attacker was not armed with any sort of weapon other than his fists. Hale shot "an unarmed man." He was acquitted.
I saw an interview with Hale after the trial. I think he is the only person I have ever heard say afterwards that he would have rather been beaten to death than to go through what he went through. At the time, while he would be allowed to recover his CHL, he had no plans to do so. He was that disgusted with the whole process. I never saw another interview with him and have no idea if he actually gave up his CHL for good or not, but that had been his plan.