ill
Superstar
There were a ton of logical fallacies in your gish gallop of a response, but I'll just focus on this one.
You assume that all the people who stopped a shooting without a gun would have done the same thing with a gun. This completely ignores the psychology of gun users.
#1. Many people who stop an attack without a gun would have ideologically been against using a gun in any circumstance, so it's a false assumption to say they would have used a gun.
#2. When reasonable people have a gun available they start considering all sorts of other factors besides "stop this guy as quick as possible", like whether they might hit bystanders or whether their firepower can stand up to what the perpetrator has or whether police might mistake them for the shooter if they pull. There are numerous examples of people being armed who choose not to shoot because of these factors (Uvalde being the most recent, but it's happened over and over in mass shootings and those are just the ones we know who admitted it). So it's false to assume that just anyone would have used a gun in that scenario.
#3. People who rely on guns for defense minimize other possibilities. I have never once heard of a person who had a gun choosing not to use it, but then stopping the attacker in some other way. Just like the cowardly police officers, a man with a gun relies on the gun - so if he doesn't use the gun, he doesn't do anything at all. In many circumstances that might make the person relying on their gun even less likely to stop the attack than if they'd had nothing at all.
#1 is you imagining things. Someone that has the heart to stop an attack will be ideologically against using guns?
#2 the flip side is theres a majority of reasonable people who would effectively use their weapons without harming innocents. Not every situation would allow it but theres clearly plenty of instances where theres no innocents around.
#3 if youre in a situation where you had to draw your gun, thinking about "other possibilities" is fukking reckless. Your only priority is protecting your life.