I had quite few discussions with Martial Arts Experts that said they were looking at the Krav Maga techniques or to be more precise in the terminology I would say Pure Krav Maga techniques, and said that with all their experience they tried to see where the techniques are coming from, however they had very hard time in doing so!
You might think some of the Pure Krav Maga punches are boxing punches but in fact they are not even though the founder won boxing wrestling and gymnastics championships.
The Kicks in Pure Krav Maga are not your usual Kung Fu or Karate kicks either. In fact some of the low kicks might be considered to have elements of Judo throws.
Perhaps the closest similarities for Pure Krav Maga Kicks, Strikes,Defenses and escapes, are Karate, Boxing and Karate, Wrestling Jujitsu, and Aikido for its tactical defenses, but remember they are not. You have so many styles and methods for each one of these.
Pure Krav Maga Strikes, Kicks blocks and escapes were surely thought of elsewhere before Krav Maga was developed. Do you think Krav Maga's escapes look like Jujitsu? Why not Kung Fu then? Do you think Krav Maga's strikes and kicks look like Kung Fu? Why not Boxing and Karate then?
The re organization, change of sequences, adaptation of the techniques and drills and timing specifically for the purpose of hand-to-hand-combat were engineered by the founders of Krav Maga.
The training approach, the techniques generating impact, the tactical hierarchy, the overall understanding of the critical few split second process of self defense had to be more specific and more efficient.
The bottom line is that the quest to develop comprehensive counters to all the other martial arts drove the founders to use efficient methods of instructions and training.
So many martial arts out there, training methods, and fighting sports. The arts usually concentrate their training on only few aspects of unarmed combat. The sports usually concentrate their sports on few aspects of unarmed combat.
In fact if you compare their training methods to Pure Krav Maga training methods, you realize that the fighting sports fights are a limiting version of survival self defense. At the same time if you look at the Pure Krav Maga sparring you might see more in depth work on more complex series of assumption but much less injuries than fighting sports.
On the other hand, lack of sufficient complexity and over simplifying the training methods have a tendency to result in meaningless fitness drills that do not serve the purpose of hand-to-hand-fighting training.
In Pure Krav Maga training method you students learn to navigate to reach their opponents pressure points first in a process starting before the entry to the hotzone - the point of breakeven. With the advantage of being certain you get to the finish line first, you have the confidence to do so!
To reach that level, you work on efficient methods of generating impact force, understanding push and pull forces, and learning the universal limits of reaction time.
You follow with specific drills learning to apply your knowledge. Then you check that you did not miss anything in the process and go and fill the missing parts.