The picture concepts were low on my son's first test because he draws stick figure dioramas rather than detailed, pretty art. The tester decided the drawings were basic, rudimentary, and poorly constructed. Some of that really is subjective.
As to the scatter, maybe it is ADD, maybe not. Our 2E kids sometimes look like ADD even when it isn't. My oldest has ADHD and is textbook classic. My youngest sometimes appears that way but is not. He is usually "spaced out" due to thinking in depth about something, not caring whether he goes fast enough on a timed test, etc. So I'd be slow to allow a label while you looked further into it.
What is your son's arrangement for education now? Is he in gifted classes at all? Does he need accommodations beyond serving his higher IQ (i.e. longer time to take tests, etc.)?
