Not sure if reaper drones would count towards air superiority since bombers do not. The reaper does have air to air sidewinder missiles or two, but appears these are reserved for defensive countermeasures rather than hunting for bear as a fighter plane or interceptor would.
Reapers appear to operate primarily at high altitudes waiting for a target to appear so as to bomb it. If an unknown fighter or drone came near the reaper it might unleash its sidewinder in self defense, but this tactic would not establish air superiority.
Prior to air to air missiles, only fighters and interceptors counted towards establishing air superiority, within reason. A fighter bomber does.
I do not know how surface to air missiles or patriots come into play these days, I suppose contribute in a sense; during a battle tho, dunno.
A scout plane with a pilot armed with a rifle could have air superiority if he were the only aircraft within a hundred miles of the battle, but this of course is not a valid argument.
The way I remember it from last century, pertaining to battles, air superiority is over 5 to 4 ratio of fighter and interceptors of roughly equal quality. Air supremacy is over 5 to 1. Air dominance is over ten to one. Air inferiority is less than 3 to 4. Air parity is self explanatory.
With superior aircraft which generally exists today between first world and second world countries such as US and Iran, air superiority takes on a different interpretation as we can well imagine.
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