Average heroes would be around 2. I figure if you're parading about as a gadgeteer, using chemical weapons, etc. you'd need some brains. Batman's IQ would be a 5, Brainiac's would be a 10. I also see IQ as being a part of a larger experience. If you're character has the scientific background and you wanna keep coming up with stuff [I'm thinking like turning Savage Hulk smart after a time, going beyond Level 10, making him use tech...] I would imagine making them a point or two higher than their peers who aren't scientists. 

IDK about half the names of the moves but it looks legit LOL. 

~KL~