He's asking about Wing Chun vs. something other than Wing Chun..i.e. how an "average" person might fight, rather than just responding to other Wing Chun attacks.
It's not a "dumbfounded" discussion, whatever that means.
Look, anyone training in a art will be better than anyone "untrained".
There are guys out there that grew up rough enough that a few years in the dojo or gym probably won't put you on the same level of familiarity or comfort with violence..training helps but it's not a guarantee of anything. I've seen your above statement proved wrong.