My understanding is that motor coordination is a mostly separate issue from attention regulation and task completion, so it would make sense that a stimulant would address focus and impulsivity (as well as suicidality and criminality by proxy of those) but not clumsiness. Also, one can have ADHD without being clumsy, but being clumsy alone does not quality for ADHD.

I could be completely wrong, but hopefully that explains my take better. I'd be happy for someone to correct me.