User blog comment:General Awesomo/The Problem with Guard Crush/@comment-3343682-20141211023806

First things first, you'll want to link to that bit about the Guard Crush. I'll look it up as well when I have the time.

Also, as far as the mask/claw mechanics, an ideal Vega player would have to block all that much to begin with, given his agility and air approaches: Flying Barcelona around the opponent, Back Slashes, etc. "Ideal" is the key word here, and one I'm using somewhat loosely - I'm going off what his design indicates to me on a basic level, so grain of salt! :P

The original idea of Guard Crush, far as I can tell anyway, is to punish excessive blocking more than anything, though if your opponent can maintain pressure, I understand that can become a hard-to-mitigate liability.

As for parrying, jury out on my end - I'm not sure if they'll revisit SFIII mechanics, designs, etc. so I can't say much on that.