What if you try looking at it like this:

You have two people with ADHD-like tendencies. One person feels they have found their own ways to adapt to their ADHD-like tendencies and that they are successful. Another person feels that they have not found ways to adapt to their ADHD-like tendencies and their life could be better if they found ways to adapt.

In this case, the actual magnitude is less important than how individuals adapt.