Superarmor

Superarmor and Stun Resist are different thing. Superarmor is a hidden status for a certain char. Higher superarmor value prevents skills from being disrupted.

Basically all chars have the same base superamor value. However, the value of superarmor on the char increases if certain skills are casted.

Take note:

• All boss/mobs have a certain superarmor too, which is the bar below his HP.
• Mercenary has 2 buffs that increase the superamor value. 
• SM has a skill to reduce superarmor of targets
• Superamor can't be buffed by armor/gears or whatever other means. 

Example of Superarmor

Most lv40 ultimate have very high superarmor value.

Notice that during apo roar, if bow master cast his lvl40 ultimate, his skill won't be cancelled or blown away. If he just stand there doing nothing, he will definitely get blown away. Why is that so? Because while casting the lvl40 ultimate, a certain hidden value of superarmor is given to the bow master. Unless he is hit by a few skills which have very high superarmor destruction ability, his superarmor won't be broken and his skill won't be disrupted.


Superamor Destruction

Now, lets talk about superarmor destruction stats, which is another hidden stats. Superarmor destruction is NOT affected by any of the armor/weapon that you used. Superarmor destruction only increases by a certain value depending on which skill you cast.


Example of Superarmor Destruction

For example, flying swing of mercenary has very high superarmor destruction bonus. Each skills has a unique value of superarmor destruction.

It is especially important to know which skills has high superamor destruction, during the apo electric ogre hugging. If someone is hugged, other members should use high superarmor destruction skills to break the superamor of  the ogre, thus saving your party member.

Relationship between Superamor and Stun Resist

Ok.  What happen after superarmor is broken?

It will depends on which skill break the superarmor.

Some skills by default causes the target to delay/flinch (hacking stance and alot of Sword Master skills for example), some skills (like Summon Comet of Force User) will cause the opponent to fall down instantly, some skills will cause opponent to stagger (knockback but not yet falling down, but at this stage, the char has very weak superarmor, any single hit would cause him to fall down) and some skill will cause opponent to be floated (like alot of acrobat's skill).

Credit:
http://forum.mmosite.com/thread/2/49/20110508/How_does_Stun_Resist_function-4dc67d200716c4313-1.html#p4dc8cbd7c5d5a6