Have you ever smashed your finger with a hammer? Hit your funny bone? or Woke up next to a ugly woman after being out drunk all night ? cut yourself? in real life? probley....
Well all these things make you feel light headed when they happen or at least take your mind off everything else for a few moments for sure. So If you could imagine getting shot by a bullet or hit by shrapnal moving at a incredable speed, I'd say depending where it hits, and the person, all reactions would be different .
Maybe they should put the pilots type damage in the damage report. like;
leg wound
arm wound
upperbody wound and so on.......
make each wound react different , with different time spans for each type .. something like that,.. or maybe they already do, we just dont get advised where we are wounded, eh?