First, I don't think you know how IQ works, and second, if this is how Dragon Age works, I don't think the fine people at Bioware (and I wouldn't besmirch them in any way) know how people work.
IQ is a measure of intelligence relative to your age: a 20 year old with an IQ of 100 is as smart as an average 20 year old; a 20 year old with an IQ of 200 is as smart as a 40 year old. Further, it's an entirely subjective measure that doesn't accurately account for specialized knowledge (for instance, memorizing all of the commands for Action Script 3; speaking multiple languages; etc), and is generally not an accurate way to actually measure intelligence.
Second, emotional distance does not turn you into a mindless slave or drone or whatnot; that's ridiculous. It's still possible to have preferences, goals, motivations, and independent thought even if you use a purely logic-based decision making process. And yes, it is possible to HAVE preferences, goals, etc without emotion. Look at the Borg, or any similar hive-mind race: emotionless, but also distinctly motivated, with clear preferences (purity), goals (assimilation), and motivations (total universal perfection).
Third, there's a difference between feeling emotions and acting or making decisions based on emotions. I don't want to do the dishes 'cause it's boring, I like to eat chocolate 'cause it's tasty, but I still do the dishes and eat things other than chocolate because I know there are good reasons for doing so.
Fourth, why would a lack of emotions make you smarter?