There's an article by Joe Lewis http://www.realfighting.com/0102/joelewis.htm comparing the streetfighter to the pro fighter.
Not suprisingly, he mentions several ways in which a pro fighter is far superior to the supposed streetfighter (conditioning, mental attitued ("heart"), technique . . .).=
I suppose he was trying to counter the many articles that downplay the utility of martial arts in reality situations.
Personally, I argee that the best fighters are going to be pro fighters, but so *what*? Tha vast majority of martial artists aren't even amateur fighters, and I doubt that a few years of martial arts training, in which one doesn't compete or at least spar full contact, is any match for an equivalent time learning to sucker-punch, mug-from-behind, and/or deal with live weapons.
I also argree with the Adrenaline training poeple who stress model-muggings etc in their self-defence training. Fear makes a tremendous difference!! A [good] article at the same site http://www.realfighting.com/0102/billkipp.htm tells how a trained marine found himself in adrenaline paralysis.
I experienced a disturbing lack of composure, almost to the point of allowing my opponent to beat me, when I felt myself in a bad situation at the past Gathering. That was in a very controlled and relatively 'safe' (notwhidthsanding the big dogs with their caveman-sized clubs!) scenario where suprise wasn't a factor, and I knew the intent of my opponent was to beat me rather than finish me.
The streetfighter, I assume has a much better handle on the adrenaline scenario.