Concluded it’s superior to (4)
I believe the answer is:
over
I believe this is a triple definition!
'concluded' is the first definition.
('over' can be a synonym of 'concluded')
'it's superior' is the second definition.
(thesaurus)
'to' is the third definition.
(thesaurus)
(Other definitions for over that I've seen before include "Passed" , "See 19" , "Six cricket deliveries" , "Concerning" , "In the sky?" .)