The phrasing "that ship can modify only 1 [focus] result" as written clearly states that the ship can NOT modify any results other than the single [focus] result. However, they've added in the parenthesis text stating that they can still modify their other non-[focus] results. Up until now I believe that all text in parenthesis has been intended as clarifying/reminder text but not actual rules. Is this the only case where without the "reminder" text the effect would entirely change?
IMO the text should have been "that ship may modify all of its non-[focus] results but can modify only 1 of its [focus] results".