Its a Level 4 move, so it has 18 frames of stun against a blocking, standing opponent. Also, it has a 10 frame disadvantage on block.
I've uploaded a pressure section in the Tips and Tricks. Its not that great, but it should help. I play against CPUs, so I'm the last person to come to for advice on pressure . Anyways, all feedback will be greatly appreciated, and the section will promptly be corrected!