Forgive me but I have learned that something in our hindbrain reacts differently when we see a long knife or sword versus a firearm. I don't know why other than conditioning? Whatever teh reason is, when the knives come out, people pay attention.
I think there's a few things to it.
First of all, historically speaking, the human race has much more time spent with blades than with firearms. "Blades" to include polearms like spears and such.
Second, a firearm is a machine. A blade is much closer to a tooth or claw in shape, design and manner of function -- it brings out our predator side and our wariness of other predators.
Third, unlike what we see in hollyweird, where even the slightest blow of a sword to the midsection brings about instant death, being "bit" by a blade historically meant losing part of the body and a slow, painful death due to infection.
Fourth, the western entertainment media likes to villanize guns. When guys are tortured, American movies like to show them being shot int he kneecaps, etc. In reality when the torture starts, the knives come out.
I remember a recent conversation I had with people coming home for a spell from both Afghanistan and Iraq. They all said the same thing: the enemy would scream, holler,, spit at you, throw things at you, etc if you had your rifle. They would cower if you had a pistol, and would run and hide if you had your bayonet fixed. Guys that would otherwise fight to the death would cut and run or surrender if they saw our guys coming at them with bayonets fixed.
The reasoning came up with was this: pistols are feared because they are a status symbol of officers and government officials -- guys that had the authority to kill you on the spot. The rifle-wielding soldier did not. With bayonets fixed, it meant they had shown up to kill you, not talk to you. And knives in general? Well, the nice man down at the police interrogation room had knives. . .