Its been filtered through a years and years of being reduced to an arena sport and often childrens fitness regime, often totally out of any reference to original cultural context too.
I have, as a curio, a small pulp paperback I discovered years ago in a second hand bookshop called "super karate, yeah" or something like that, it was from a time, long ago, when eastern martial arts were seriously esoteric and predating any of the martial arts movies, bruce lee, the karate kid, any of that (Bruce Lee hated the use of karate to designate all eastern martial arts and gave interviews about that).
In this book there are illustrations about jabs, cobra strikes, chops, some seriously nasty and debilitating stuff and it clearly predates any sort of publishing code or publishers liability and would appear to be some white, western, US writer providing, totally unfiltered, death dealing techniques he's learned on tour around Japan.
Odd and unusual sources like that aside even more recent movies like Jet Lee's Fist of Legend show how Karate and Kung Fu both used to be less about fixed positions and proper fighting, Bruce Lee talked about this when coming to the west and becoming interested in boxing like Muhammed Ali, its virtually were Jeet Kune Do comes from and its the precursor to so called all in and MMA fighting.
Although, one massive caveat I'd add if this thread is going to discuss fighting and street crime is that you've got to have a lot more than moves on your side, I've been in a lot of violent situations, seen others freeze and faulter just when you'd think they wouldnt or shouldnt or when its likely to actually encourage violence from an aggressor, I've studied and seen how matching of emotions can work and influence these things for fair or foul.
Most of all you've got to know what you're willing to lose and what consequences you're willing to deal with, relinquishing possessions often saves your skin and that sort of survivalism is important, its how professionals, police or intelligence operatives are liable to operate, there's more avoidance in those trades than confrontation or dumb head on fighting.
A lot of the time criminals may just be engaged in robbery as a pretext, they're looking for an excuse for violence, the act of robbery probably has less to do with real need than their own perceived power and desire to control or dominate others and situations. Consequently shit can escalate incredibly quickly, to real ultra violence, there wont be any conscience checking it, there wont be any inhibitions about it and the victim will be seen as to blame by the perpetrator. I always remember an episode of the simpsons were Homer gets in some sort of scrape and walks away from what should be a cause for depression by saying "The jokes on them, I'm still alive", you've got to think about that and like that.
No matter how well trained you are and how prepared you are to employ force and violence yourself, no matter how convinced of your right to self-defence, I've found that in most people who are "normal", for want of a better word, and not some disturbed, hard hearted douche, they will unconsciously pull their punches and be inhibited when shit gets real. Its a theme in more than a dozen movies that I can think of, from Saving Private Ryan to Creep, Wolf Creek and real video nasties like that. I've seen it play out in real life though and people should be aware of that. Its not a flaw. Its not weakness but it could be a weakness if you choose to ignore it. Its like height or eye colour or any other real trait effecting your life and self.