The actual fighting is fake, but when someone gets hurt, like HHH, or like Owen Harts death, is real. There can be mistakes. Those are real, the acutal thing is fake.
I do highschool wrestling and what they do on the WWE is far from even freestyle wrestling, it's far slower and it's all show, really, there is a huge diference.
I do real wrestling for my highschool too. Most of them would get killed in a real wrestling match I believe.