The thing about Parasoul SAs in general vs higher AI is that she can make an unsafe combo unpunishable.
No Egrets value isn't really in critting and then waiting for the enemy to flap around like a fish without any options, to then just attack them semi-safely and do it again--though that's good too.
The main appeal though is that the three of the four ways higher AI can frame-one punish you have been blocked off, so as long as you keep the opponent hitstunned you can get a greater combo without punishment. In an odd way it's like having higher dps.
Someone on the forums pointed out that a combo is punishible based on the color of the counter, with No Egrets scoring a crit you no longer have to worry as much about the red numbers.