He’s has simply made an information request that can’t be responded to in any way that will help him prepare for what’s going to happen to him. Nobody knows what’s going to happen to him.
Odds are, it’ll be a short fight with zero to almost zero notice. Range will be arms length to 10 feet. Everyone involved will be moving in unpredictable ways.
But, it might not be that way at all. He may see it coming and be able to get ready, take cover, call for help, get the hell out of the area.
Bad guys plan their fights to give them all the advantage and give you the shaft. They don’t plan their fights based on statistics on civilian defensive shootings like number of shots fired, at what distances, location or anything else that will help with your planning.
Since you can’t plan on the BG’s actions, give yourself the best chance you can by carrying the gun(s) you can fight with the best. You might love .45s (I do), but be able to do your best shooting with a Glock 19 (I do). Don’t fit your gun to your clothes, fit your clothes to your choice of fighting gun. Don’t carry a .32 just because it’s comfortable. Don’t carry anything in a way that requires two hands to get it into action. Be prepared for the really bad stuff. Planning for the wrong part of the statistical curve can get you killed.