I guess this question is best asked by giving an example. This is kind of an extreme example
I thought about it 'cause at my gym they teach Tae Kwon Do to the little kids who are like 5 and 6. And sometimes when they’re board between class they’ll come over to me and say I can beat you up.
Now I’m 5’ 10 and 190 pounds and they’re little no amount of Karate or Judo or Tae Kwon Do will enable them to beat me up.
Now that’s an extreme example but let’s say you have a woman who is 5’2" and weighs 100 pounds and is a black belt in Karate could she seriously take on a 6’ 225 pound man?
If so at what point would she not be realistically be able to defend or “fight” someone with whatever martial art she knew.
Or if it’s a man etc.
I think you get the point.