Train!

[mcantar18c]

A full auto weapon isn't a fire hose and there's always more air than meat. Someone who "just sprays at folks" is much more likely to have a lower body count than a higher.

As a rule of thumb, sure. But in a densely packed restaurant where most of the people are stationary and fairly close to each other?

We went through this in the 9mm vs. 45 thread but I'll say it again here. Pistols suck as fight stoppers. Nothing that is man portable can stop a threat guaranteed.

Shooting a threat behind cover is a job for a rifle and a good barrier blind projectile.

For that matter, shooting a threat at 65M is a job for a rifle too.

Armchair quarterbacking a fight is gay.

I'm pretty sure you were one of the only ones that agreed with me in that thread. All common handgun calibers suck, period.
That said, there may be times where you need to shoot through cover (wood, drywall, thin sheet metal, etc.) to stop the threat... and you can easily find multiple cases where shooting through cover is what saved the victims life. A round powerful enough to do that is enough to do the job at 65m (if you do your part).
A .25ACP fired out of a pocket pistol is not one of those rounds.