The 1st rule of a gunfight is to have a gun.
It is HIGHLY unlikely you will ever need to draw a gun ...... but just in case .....
In 95+% of DGUs, no shot is fired....... so better than 19 times out of 20, if you have a gun of any kind and it is plain that you have the will to use it, that would be enough...... and it would not matter what kind of gun you had, so long as it is clear to the goblin that if they keep doing what they are doing, they will get shot. No sane, even semi-intelligent person wants to be shot with anything, even a Jennings .22.
That said, there is that 1 time in 20 (which you will likely never see, unless you frequent bad places and/or associate with bad people) when you are dealing with someone who is not firing on all cylinders .... in which case, I would like to have the best gun and ammo and training I can afford...... just in case......YMMV.