Ahhhh, I see.  So it’s not the notes per se that tell Superior the hi-hat position, all they do is indicate that the hi-hat is being hit. 
 
Presumably the factory table decodes whether the hit is bell or tip.  (And I imagine this factory table is not user definable by…er… definition?)
 
And then the current CC4 value tells Superior which sample to play as far as how open/closed the hi-hat is.