I'm not sure that's true?, but of course we have no data at all to go on. From my observations of the fights i got into and a lot more I've seen, then its not at all in common to see unfit uncoordinated people fighting each other, and occasionally me. I think you can build a super bogey man who might attack you, when its far more likely to be some less than able bozo who is having a bad day
you just have to cut the % by being the best you can and then take what comes
i had a run in a couple of weeks back some guy who was far bigger than me in dispute over who had right of way ( me), who was confident that his,size would intimidate me, when it dawned on him that i wasn't at all opposed to fighting him, he left quickly, unless he trains harder than me, that seems unlikely as he was three stone over weight, then I'm almost certainly fitter and stronger than he was