As for why his current strength is enough to rival the 'Seven Tribulations Loose Immortal', Wyatt Barnes knew this all too well.
First, because he had a 'Celestial Sword' in his hand.
Second, the Auxiliary Divine Ability he mastered, 'Minor Devouring Technique', was from the Celestial Planes, and even among those planes, it was an impressive Auxiliary Divine Ability.
Finally, Wyatt also relied on the legacy left by the Sword Saint Breezy Wind, the supreme sword dao mental method 'Supreme Heart Sword'.
However, the methods of 'Supreme Heart Sword' do not belong to any Divine Ability; they fall under the category of martial arts techniques, so they do not conflict with attack Divine Abilities and can even be used together!
That is to say, if Wyatt could acquire an attack Divine Ability from the Celestial Planes, his strength would be further enhanced!
