Screamer said:
the "roll an extra attack whenever you roll a 6" could be considered a contradiction.
The PF rule is "Whenever a model with this special rule rolls a 6 To Hit in close combat, it immediately makes another Attack..."
The Supporting Attacks rule says "[a model] can only over make a single Attack, regardless of the number of Attacks on his profile, or any bonus Attacks he might otherwise be entitled to because of special rules or other unusual effects"
The PF rule contradicts the first part of the Supporting Attacks rule "can only make a single Attack" however, Sleboda's point is that there is a second part of the rule "regardless of ... any bonus Attacks ... because of special rules" which PF does not contradict.
The second part of the Supporting Attacks rule says that Page 11 does not apply to the first part of the rule. In order to contradict the Supporting Attacks rule you would have to contradict the second part of the rule. This is what the Monstrous Support rule does:
"A monstrous infantry model can make as many supporting attacks as are on its profile, up to a max of three,
rather than the usual one supporting attack"
In order to sufficiently contradict the Supporting Attacks limit of 1 attack, PF would have to include similar language to "rather than the usual one supporting attack" otherwise the PF rule falls within the bounds of diction (rather than contradiction) of the Supporting Attacks rule:
1. Is PF a special rule? Yes, it specifically says "... a model with this special rule" and is in a section called "Army Special Rules"
2. Does it give a model bonus attacks? Yes, it allows a model to "make another attack"
3. Can bonus attacks from a Special Rule cause more than 1 supporting attack to be made? No, the rule specifically says that bonus attacks cannot cause more than 1 Supporting Attack to be made even from Special Rules
PF isn't saying anything to the contrary of the Supporting Attacks rule. It is perfectly described by and accounted for by the Supporting Attacks rule. Page 11 never enters into it.
The only way to cause a conflict with the Supporting Attacks rule is to specifically reference Supporting Attacks, otherwise the rule has a catch-all clause to stop Special Rules from affecting it.
I think that's a little bit more than an opinion.
How exactly does the actual words used in the PF rule get around the "regardless of ... any bonus Attacks ... because of special rules" clause?
I think the strongest argument has been that the term "Whenever" implies a reference to Supporting Attacks. This is where opinions enter into the equation.
My opinion is that the Supporting Attacks rule is written such that it has to be specifically mentioned to be overwritten rather than implied by a word like "Whenever" or "Anytime". Sleboda thoroughly discussed how "Whenever" is implied in any rule that relates to Attacks (Whenever you attack, you have +2 attacks, etc) which would implicitly imply that Supporting Attacks are affected by those rules too (Inception style, seconds degree implications) Which, if you agree with his argument, then it would disprove the contradiction via a "If A then B, since we know !B then !A".
However, others do not share this opinion. I think you'll be hard pressed to convince many opponents of this argument if they read the PF rule, the Supporting Attacks rule, and the Basic vs Advanced rule.