I won't even comply to lay down on the ground. Since these are rarely a first time action by a robber they become a bit complacent expecting absolute compliance. Most don't expect a full on charge from a "victim" and i intend to win. If he has a gun visible i will try to get inside his reach. If he thinks faking a gun is gonna work everytime he just rolled snake eyes and got dealt Aces and Eights!
I am in no way super bad ass but will use the element of surprise and other tactics to put him on to his guard and in a defensive posture. If I am armed with knife or gun i will draw on them too...
I just refuse to allow myself to be a victim without fighting to my death since my safety is not guaranteed in any situation where a criminal is in control.