Ah, a lack of comprehension on my part about the twin weapon fighting versus two-handed sword. Apologies.

the AI is working just fine for me... sometimes I have to play the tank for taunting enemies, but the healer and the "crowd control mage" is doing just fine with normal tactics.
Wynne or any other healer does fine on AI, in fact, I don't think I have ever manually controlled Wynne. With Morrigan or my PC mages, I like to control them most of the time for precision cone attacks and spell combos. The AI either catches me in the crossfire, or misses a target they easily could have caught in it. Why have the AI hit two enemies for you when they could have hit five?