A knife is not equivalent to a gun. One is a kitchen appliance that can be used as a rather ineffective weapon, the other is a tool literally designed for eliminating life as efficiently as possible
Disarming someone who poses a threat with a knife (especially via the use of modern equipment) is absolutely possible and can be performed in most cases with training, even with just one officer. Meanwhile, disarming someone with a gun is a much more complex task, often requiring a coordinated effort from multiple officers
>a knife (especially via the use of modern equipment) is absolutely possible and can be performed in most cases with training
I want to see you attempt that in real life when someone is within 21 feet. If you watched enough training videos and the literal flood of body camera videos that show even tasers are more often than not infective you would not speak so conveniently about a split second life or death situation.