No. Two nouns next to each other do NOT indicate that they are equated. In fact, two nouns next to each other indicate that the first one describes the second one. So SuvwI' tera'ngan would probably be interpreted as "a warrior Terran" or perhaps, "the warrior's Terran". To equate the two things (as we do with "is" in English), you have to use a pronoun as verb. Thus the ghaH is required in this sentence.