Wait a minute: damage - assuming a failed RR roll - is determined by original roll with no subtractions except casting modifiers? No DB, no nothing?
Would that not mean that an accomplished caster will always cap?
Let's put some numbers on this:
Assume 4th level Elementalist with Eloquence talent, maxed Stun Cloud skill (15 rnks) and +21 to the skill from the relevant stats using a Focus Item to cast spells.
This gives a total skill bonus of 60 (Ranks) + 21 (Stats) + 25 (Eloquence) + 5 (Focus Item) = 111
This Elementalist casts an unscaled Stun Cloud in 1 round. That's a 5 PP spell, so no casting modifiers applies. Damage is Medium Electricity crit on the first round (assume target moves out of cloud after that).
Assume the minimum successful roll of 06.
This would give a total casting roll of 117. A look at the RR column of Maneuver Table yields the RR to beat as 130. Now, if the target fails his/her RR, the result would be a 100 Elec. crit. - assuming target isn't protected by Elemental Protections or Elemental Resistance. Moreover the result would always be a 100 Elec. crit on any successful unresisted casting.
Thanks a lot for the replies and sorry to keep digging... it's just that I want to be sure, since it a world of difference regarding how powerful the spell is