Sundering Strike (Combat) Question

[Jarndey]

Prerequisites: Str 13, Improved Sunder, Power Attack, base attack bonus +9.

Benefit: Whenever you score a critical hit with a melee attack, you can sunder your opponent’s weapon, in addition to the normal damage dealt by the attack. If your confirmation roll exceeds your opponent’s CMD, you may deal damage to your opponent’s weapon as if from the sunder combat maneuver (roll normal damage to the weapon separately). This does not provoke an attack of opportunity.

Normal: You must perform a sunder combat maneuver to sunder an opponent’s weapon.

Special: You can only apply the effects of one of the following feats to a given critical hit: Bull Rush Strike, Disarming Strike, Repositioning Strike, Sundering Strike, or Tripping Strike. You may choose to use this feat after you make your confirmation roll

I know it states that for the feat to work you need your confirmation roll to exceed the enemies cmd.

My first question is this, what is taken into consideration of that confirmation roll, does critical focus (adding +4 to your confirmation roll) count? Does Improved and Greater sunder bonuses count? Is there anything that does get added to the sunder attempt or even removed from the sunder attempt, or does the sunder attempt always equal the confirmation roll no additions, no subtractions.

My Second question: I read that this feat targets weapons, is there any reason this should not be allowed to target armor/shield instead?

I'm fairly certain on the RAW, but what about RAI?

[blahpers]

1. You roll your critical confirmation roll just like you would without the feat. If it meets or exceeds the enemy's AC, you score a critical hit. In addition, check that same roll against the target's CMD. If the roll exceeds* the target's CMD, you sunder their weapon as an extra effect of the critical hit.

Since the whole thing is triggered from a regular critical confirmation roll, any modifiers to that confirmation roll would apply, but any sunder-specific modifiers would not. Sunder-specific modifiers to the sunder damage, however, probably do still apply, depending on the wording of the feat or ability granting the modifier. So, Critical Focus = yes, Improved Sunder = no, Greater Sunder = no on the attack roll but yes to the damage carry-over effect.

2. As written, it's weapons only. Pretty strange, but that's how it goes. I don't see any obvious arguments against allowing the sunder to work on armor or other sunderables as a house rule.

*Strange; usually these rolls are "equal or exceed". I'm going to play it that way as it's too much of a pain to remember such exceptions.