Cunning Brilliance: At the start of each day, choose three extraordinary class abilities. Each ability must be available to a standard character class at 15th level or lower, and must appear on the advancement table or in the text description for that class. By spending 4 inspiration points as a free action, you gain the beneﬁts and drawbacks of one chosen ability for 1 minute. You use the ability as if your level in the relevant class equaled your factotum level. (Dungeonscape p.17)
First of all it is unclear what a standard character class is. Is it the same as a base class therefore making prestige class features not eligible for Cunning Brilliance?
If prestige class features are eligible, how would Cunning Brilliance apply to something like the Duelist's Elaborate Parry?
At 7th level and higher, if a duelist chooses to fight defensively or use total defense in melee combat, she gains an additional +1 dodge bonus to AC for each level of duelist she has (DMG p. 186)
Would the Factotum gain a +20 Dodge Bonus, since he uses the Elaborate Parry ability as if he were a Duelist of level 20 even though such a Duelist level does not exist, or would this ability be capped at level 10 even though this is not specifically mentioned by the description of either Class Features?