Hypersmurf
Moderatarrrrh...
I certainly see a difference between immunity to crits, and a 100% chance of negating the crit.
If you're immune to crits, the crit still happens; you just don't take the extra damage. Crit-triggered effects - like Vorpal, Flaming Burst, etc - still trigger and have their normal effect.
If you have a % chance of negating the crit, and that chance arises, the crit never actually happened. Crit-triggered effects remain quiescent, because the critical that would trigger them was negated.
On the other hand, someone with 100% chance of negating a critical does not benefit from any of the other things someone gets by virtue of being immune to criticals - like immunity to the Stunning Fist feat, for example. He isn't immune to crits (and therefore still subject to Stunning Fist); it's just that every time someone threatens to crit him, they don't...
-Hyp.
If you're immune to crits, the crit still happens; you just don't take the extra damage. Crit-triggered effects - like Vorpal, Flaming Burst, etc - still trigger and have their normal effect.
If you have a % chance of negating the crit, and that chance arises, the crit never actually happened. Crit-triggered effects remain quiescent, because the critical that would trigger them was negated.
On the other hand, someone with 100% chance of negating a critical does not benefit from any of the other things someone gets by virtue of being immune to criticals - like immunity to the Stunning Fist feat, for example. He isn't immune to crits (and therefore still subject to Stunning Fist); it's just that every time someone threatens to crit him, they don't...
-Hyp.