Control your opponent's body through their anatomy
The most energy efficient and effective way to fight.
Well, Muay Thai is more effective in that you have a far better defense. Plus, Muay Thai offers power that the other martial arts can't match.
Krav Maga is more effective than the aforementioned nerve-control oriented tiger kung fu as well because you're blitzkrieging the mother****er.
Tiger style kung fu is very difficult to use, this isn't a movie I know.