First off, sorry someone in your life was murdered. Close or not close, that has to hit home. Second, yeah, he should have shot if he could.
If someone has a gun to me before I can react and draw mine, it has got to be a very fast judgement call as to whether I draw then or wait for a better opportunity.
The last time I was robbed at gunpoint, (I did not yet have a gun or ccw), if I had a gun and drew when the BG had his sites on me I would have been killed. He eventually put the gun back in his waistband and proceeded to look through my car. At the moment he put the gun away, I had free reign to pull an ar-15 if I had one.
If you are backed into a corner and there is no other way out, draw, shoot and pray the BG has bad aim.
Brain (Use this one the most)