Borrowing a topic a little. Does each skill point do the same for each class? For example that one point of CON, do you get the same benefits from it on Warrior and Mage classes.
I seem to recall in earlier DA games that Con the different amount of HP to each class, or something like that.
Unless I'm mistaken the only stats that are class-specific is Strength (+ attk for warrior), Magic (+ attk for mage) and Dexterity (+ attk for rogue). The constitution point you get in DAMP increases health (and presumably attack for everyone), cunning increases crit chance (and presumably attack for everyone), and willpower increases magic defense (and presumably attack for everyone).
Constitution = + 5 HP for every const. point over 10
Willpower = + 0.5% magic def. for every willp. point over 10
cunning = + 0.5% crit chance for every cunn. point over 10
Edit: I don't think any core stat effects mana/stamina regen in this game. Pretty sure that's entirely dependent on passives and equipped items.