Quote Originally Posted by Tim View Post
No official source but i'm almost certain that it is weak to crush in 'normal' mode and weak to stab in 'enraged' mode. People use zammy hasta since it has stab and crush style.

Edit: Thirdagefilm explains it in his vid at ~10:55 https://www.youtube.com/watch?v=PkC48kQwezE
It's a myth that there are 2 different forms, if you watch woox's solo guide he recommends crush