Is “The Investiture of the Gods and Journey to the West have different portrayals of Guanyin.” true?

The 'Fengshen Yanyi' (Investiture of the Gods), volume 083, records: “此乃是三大师收伏狮、象、犼；后兴释门，成于佛教，为文殊、普贤、观音，是三位大士”, stating that he was originally Cihang Daoist, one of the Twelve Golden Immortals of the Chan sect. In 'Journey to the West', chapter 008, he is already the Buddhist Guanyin Bodhisattva of the South Sea, who is ordered to go to the East to find the scripture pilgrim.