One actually had high contact in the tackle and the other one didn't.Dahlhaus did the exact same tackle as Alex Neal-Bullen, he just picked an opponent 10kg heavier and stronger. That's the only difference and the only reason why Crouch avoided concussion.
The tribunal have made absolute fools of themselves.
Dahlhaus was found guilty of a dangerous tackle, he just didn't cause high contact in performing that dangerous tackle. So his punishment is lined up for body contact. The tribunal still left it at medium impact because the still slung Crouch's body into the ground.
Dahlhaus is just lucky that Crouch's head didn't hit the ground.
And Alex Neal-Bullen's 4 week suspension was a ridiculous over reaction.