Hey nice fantasie u got right there...I can say too what I would do to my opponent if I face him, but when u get in a real fight, u totally get confused, nervous, its easy to say "I would do this, I would do that" nahh, I know what Im talkin about.
You said his kung fu stance is outdated? How come, and who said that?
Every guy should practice martial arts for his own good, I respect this guy for what he did, he got big balls for comin out with this "kung fu stance" (probably hung gar), yeah the opponent was not experiecend in fighting, but look if he was I think this guy in red shirt would do this same kung fu stance.
Ive seen a guy who did an 540° kick to a guy, didnt knocked him down of course, but he was hella scared, afraid, and was like "wtf was that?", it doenst have to be a "540° kick" it also can be any kung fu style, monkey style, eagle claw, drunken boxing, or other styles like taekwondo, karate, jiu jitsu, the fact is people gettin scared (martial artist) when they come to a real street fight, gettin confused, stoned, and ashamed to do what they did learn in the dojo.
The lower your center of gravity, the more power you generate.
The higher the center of gravity, the more mobility you have.
The low/wide stances are generally considered "outdated" for street fighting because generally, footwork is crucial to survival.
Sagat didn't just make that stuff up -- it's well known that defenses for the legs, and mobility are weaknesses of the wide stances.
The low stances are still practiced for sparring because kicks to the legs and thighs aren't allowed, and therefore you don't have to worry about protecting them, and high kicks are encouraged - in some sparring competitions, kicks are worth more points that punches. Low stances can be helpful for this.
Crossing the legs is always a bad idea - it's up there with lowering your guard, or blocking a punch with your nose.
Now, I have no problem with using these techniques in a fight, but only in a
transitional use. That is, I won't stand there in a low stance, but I will move into one if I need to deliver a powerful strike. Since most of my strategy depends on footwork, that will be rare. Also, I would rather scare/confuse the guy by surprising him with a sudden "traditional" move. I would rather appear untrained, and then surprise him that way.
The low stances, and "hard" style practice is there to teach you how generate power and to use your body efficiently. In a fight, many teachers (Musashi, Marrozzo, Thibault), will tell you to forget your training stances, and move fluidly.
Chuck Norris learned, and still teaches, hard-style traditional karate, but go back and watch his old fights -- he moves smoothly.