So many guys use this view of applying resistance as a all stop to all martial arts effectiveness and yes I agree to a point.
No doubt if overwhelmed you can make mistakes that will cost the fight.
We are talking about highly skilled people here at the top of their game also young adult mastering their art of course.
You need to consider other aspects to a fight as there is deflecting, defending, moving, and parring strikes, just like in boxing there is defensive skills hence Floyd Mayweathers skills as an example pull back, bobbing, weaving, ducking and footwork skills
But when the person counters using their art form and skill sets that can upset the balance or direction of the fight if the art is very aggressive and hitting vital organs with intent to cause maximum injury or death in cases like military fighting techniques.
The military spend heaps of time researching all this stuff and combine many arts and have a good documented history now of what does work and Kung-Fu San Soo was one of those arts in the list of choice amongst JKD, Judo, Filipino arts etc.
But to stick to the Thread Topic I suggested Kung-Fu San Soo vs MMA as best fit that was my opinion replying to conversation.
As to why people feel San Soo is a poor ineffective system that does not capitalize over an opponent who is lacking aggression, beats me.
I believe its lack of knowledge its a powerful system like some other types of Kung-Fu as well and here lays the other dilemma that it all depends on the practitioner how well he knows himself how willing to cross the bounds of just hitting to utilizing the whole art form for maximum hurt in the act of fighting because thats what San Soo is in the practical application.
More here:-
Kung Fu San Soo: Effective, Real-Life, Street-Fighting Techniques