What this means is that instead of exception text in the new power, the new power is giving a "BRAND NEW MEANING TO THE EXISTING RULES" because the hit rules have never been used in such a way as to prove that a critical is a hit. The normal flow is did you hit? If so then maybe you got a critical and check these rules to find out. What this means is that you are using the general hit rules to prove that you hit and that IS a circular argument. The general rules on hit are not intended to prove that you hit, they instead tell you when you hit by meeting it's criteria.
So I guess my point is IF you can prove that Holy Ardor allows you to "hit" WITHOUT using the general rules for "hit" then you have a case.
I wasn't planning on getting back into it, but how can I refuse such a well articulated request for explanation? You present a well stated question that deserves a least a good effort at a worthy response.
(Note- my explanation relies on the "permissive" assumption defended elsewhere. I will attempt to answer your "bypass the hit rules" question)
You stated that the rules on crits have never been used before to declare a hit. This is absolutely true. In every instance prior to this, hitting was always a prerequisite. i.e the only paths to crit went through the hit rules.
Holy Ardor comes along and says you crit. It is unlike other similar powers like RRoT and Prophecy of Doom (Divine Oracle 11) that explicitly require you to hit before you can get a crit. Holy Ardor just says you crit.
So what part of it's requirements are outside the normal hit rules? Well the mechanic they provide in the rule is rolling doubles. There's nothing like that in the normal hit rules.
Because every crit ability to date either only changed the crittable numbers (but still used the other crit requirements) or explicitly required you to hit first, the hit rules were
always used first,
before a crit was declared. Holy Ardor doesn't follow this precedent, suggesting that it is a bit different than those precursor crit abilities.
The
mechanic of satisfying Holy Ardor is entirely outside the normal hit rules. Natural 20 (auto hit) is the only other case I can think of that doesn't add something to the roll or compare the number to the defense to determine a hit. With Holy Ardor you're just seeing if the numbers are the same. That's pretty distinct and certainly doesn't modify anything in the normal hit rules,
but satisfying that mechanic isn't dependent on the hit rules either. (unlike the RROT and PoD mechanics of achieving crits)
So the conclusion is that it's a new mechanic that isn't subordinate to the hit rules, but acts in tandem with them providing an alternate way to get a crit.
Otherwise you are suggesting that Holy Ardor is either changing the meaning of the general hit rules OR giving them a new way to be used that was never intended. Either of those cases is bad for exception based design as it breaks the entire system at it's base level.
Well, the intentions of the designers are kind of what we're debating here isn't it? But if there *were* a way to
definitively determine that this was not what they intended then I could possibly agree with that part. As it is, I think the designers were trying to do something new as well as relying (too much?) on the common conception that a crit is a hit. I agree that such a new mechanic should have more explanation around it, regardless of who's right about it.
Because of the new mechanic, I don't think Holy Ardor changes any of the normal hit rules. In fact, I don't think it relies on them much at all except to tell us that crits are hits. After all, critical hit is a subheading of hit.