Almost always a person without ADHD
will get high on adderall, while a person with ADHD
will actually slow down and be able to concentrate. Your remarks seem like this may be how you reacted. Particularly since a person first going on speed tends to get a pretty good rush. However if they are on something else to calm them down or are physically huge, etc., they may not feel the effects as much - so this isn't 100% accurate.
What you probably need to do is some more research into ADHD.